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Wang BX, Krogstad MJ, Zheng H, Osborn R, Rosenkranz S, Phelan D. Active and passive defects in tetragonal tungsten bronze relaxor ferroelectrics. J Phys Condens Matter 2022; 34:405401. [PMID: 35853443 DOI: 10.1088/1361-648x/ac8261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Tetragonal tungsten bronze (TTB) based oxides constitute a large family of dielectric materials which are known to exhibit complex distortions producing incommensurately modulated superstructures as well as significant local deviations from their average symmetry. The local deviations produce diffuse scattering in diffraction experiments. The structure as well as the charge dynamics of these materials are anticipated to be sensitive to defects, such as cation or oxygen vacancies. In this work, in an effort to understand how the structural and charge dynamical properties respond to these two types of vacancy defects, we have performed measurements of dielectric susceptibilities and single crystal diffraction experiments of two types of TTB materials with both 'filled' (Ba2NdFeNb4O15and Ba2PrFeNb4O15) and 'unfilled' (Sr0.5Ba0.5Nb2O6) cation sublattices. We also perform these measurements before and after oxygen annealing, which alters the oxygen vacancy concentrations. Surprisingly, we find that many of the diffuse scattering features that are present in the unfilled structure are also present in the filled structure, suggesting that the random fields and disorder that are characteristic of the unfilled structure are not responsible for many of the local structural features that are reflected in the diffuse scattering. Oxygen annealing clearly affected both color and dielectric properties, consistent with a diminishment of the oxygen vacancy concentration, but had little effect on observed diffuse patterns.
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Affiliation(s)
- Bi-Xia Wang
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - M J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - H Zheng
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - R Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - S Rosenkranz
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
| | - D Phelan
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, United States of America
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2
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Hameed S, Pelc D, Anderson ZW, Klein A, Spieker RJ, Yue L, Das B, Ramberger J, Lukas M, Liu Y, Krogstad MJ, Osborn R, Li Y, Leighton C, Fernandes RM, Greven M. Enhanced superconductivity and ferroelectric quantum criticality in plastically deformed strontium titanate. Nat Mater 2022; 21:54-61. [PMID: 34608284 DOI: 10.1038/s41563-021-01102-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
The properties of quantum materials are commonly tuned using experimental variables such as pressure, magnetic field and doping. Here we explore a different approach using irreversible, plastic deformation of single crystals. We show that compressive plastic deformation induces low-dimensional superconductivity well above the superconducting transition temperature (Tc) of undeformed SrTiO3, with evidence of possible superconducting correlations at temperatures two orders of magnitude above the bulk Tc. The enhanced superconductivity is correlated with the appearance of self-organized dislocation structures, as revealed by diffuse neutron and X-ray scattering. We also observe deformation-induced signatures of quantum-critical ferroelectric fluctuations and inhomogeneous ferroelectric order using Raman scattering. Our results suggest that strain surrounding the self-organized dislocation structures induces local ferroelectricity and quantum-critical dynamics that strongly influence Tc, consistent with a theory of superconductivity enhanced by soft polar fluctuations. Our results demonstrate the potential of plastic deformation and dislocation engineering for the manipulation of electronic properties of quantum materials.
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Affiliation(s)
- S Hameed
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
| | - D Pelc
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA.
- Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia.
| | - Z W Anderson
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
| | - A Klein
- Department of Physics, Faculty of Natural Sciences, Ariel University, Ariel, Israel
| | - R J Spieker
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
| | - L Yue
- International Center for Quantum Materials, School of Physics, Peking University, Beijing, China
| | - B Das
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA
| | - J Ramberger
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA
| | - M Lukas
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia
| | - Y Liu
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - M J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - R Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Y Li
- International Center for Quantum Materials, School of Physics, Peking University, Beijing, China
| | - C Leighton
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA
| | - R M Fernandes
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
| | - M Greven
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA.
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3
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Davenport MA, Krogstad MJ, Whitt LM, Hu C, Douglas TC, Ni N, Rosenkranz S, Osborn R, Allred JM. Fragile 3D Order in V_{1-x}Mo_{x}O_{2}. Phys Rev Lett 2021; 127:125501. [PMID: 34597061 DOI: 10.1103/physrevlett.127.125501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 06/08/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
The metal-to-insulator transition in rutile VO_{2} has proven uniquely difficult to characterize because of the complex interplay between electron correlations and atomic structure. Here, we report the discovery of the sudden collapse of three-dimensional order in the low-temperature phase of V_{1-x}Mo_{x}O_{2} at x=0.17 and the emergence of a novel frustrated two-dimensional order at x=0.19, with only a slight change in electronic properties. Single crystal diffuse x-ray scattering reveals that this transition from the 3D M1 phase to a 2D variant of the M2 phase results in long-range structural correlations along symmetry-equivalent (11L) planes of the tetragonal rutile structure, yet extremely short-range correlations transverse to these planes. These findings suggest that this two dimensionality results from a novel form of geometric frustration that is essentially structural in origin.
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Affiliation(s)
- Matthew A Davenport
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Matthew J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Logan M Whitt
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Chaowei Hu
- Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, Los Angeles California 90095, USA
| | - Tyra C Douglas
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Ni Ni
- Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, Los Angeles California 90095, USA
| | - Stephan Rosenkranz
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Raymond Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Jared M Allred
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, USA
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4
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Rosenkranz S, Krogstad MJ, Osborn R. Recent developments in measuring and analysing large 3D volumes of scattering data to investigate the role of complex disorder on crystalline materials' properties. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321094186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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5
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Lanigan-Atkins T, He X, Krogstad MJ, Pajerowski DM, Abernathy DL, Xu GNMN, Xu Z, Chung DY, Kanatzidis MG, Rosenkranz S, Osborn R, Delaire O. Two-dimensional overdamped fluctuations of the soft perovskite lattice in CsPbBr 3. Nat Mater 2021; 20:977-983. [PMID: 33723420 DOI: 10.1038/s41563-021-00947-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 01/27/2021] [Indexed: 05/20/2023]
Abstract
Lead halide perovskites exhibit structural instabilities and large atomic fluctuations thought to impact their optical and thermal properties, yet detailed structural and temporal correlations of their atomic motions remain poorly understood. Here, these correlations are resolved in CsPbBr3 crystals using momentum-resolved neutron and X-ray scattering measurements as a function of temperature, complemented with first-principles simulations. We uncover a striking network of diffuse scattering rods, arising from the liquid-like damping of low-energy Br-dominated phonons, reproduced in our simulations of the anharmonic phonon self-energy. These overdamped modes cover a continuum of wave vectors along the edges of the cubic Brillouin zone, corresponding to two-dimensional sheets of correlated rotations in real space, and could represent precursors to proposed two-dimensional polarons. Further, these motions directly impact the electronic gap edge states, linking soft anharmonic lattice dynamics and optoelectronic properties. These results provide insights into the highly unusual atomic dynamics of halide perovskites, relevant to further optimization of their optical and thermal properties.
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Affiliation(s)
- T Lanigan-Atkins
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA
| | - X He
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA
| | - M J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - D M Pajerowski
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - D L Abernathy
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Guangyong N M N Xu
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Zhijun Xu
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA
| | - D-Y Chung
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - M G Kanatzidis
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - S Rosenkranz
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - R Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA.
| | - O Delaire
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA.
- Department of Physics and Department of Chemistry, Duke University, Durham, NC, USA.
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Ortiz BR, Teicher SML, Hu Y, Zuo JL, Sarte PM, Schueller EC, Abeykoon AMM, Krogstad MJ, Rosenkranz S, Osborn R, Seshadri R, Balents L, He J, Wilson SD. CsV_{3}Sb_{5}: A Z_{2} Topological Kagome Metal with a Superconducting Ground State. Phys Rev Lett 2020; 125:247002. [PMID: 33412053 DOI: 10.1103/physrevlett.125.247002] [Citation(s) in RCA: 121] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 11/04/2020] [Indexed: 05/12/2023]
Abstract
Recently discovered alongside its sister compounds KV_{3}Sb_{5} and RbV_{3}Sb_{5}, CsV_{3}Sb_{5} crystallizes with an ideal kagome network of vanadium and antimonene layers separated by alkali metal ions. This work presents the electronic properties of CsV_{3}Sb_{5}, demonstrating bulk superconductivity in single crystals with a T_{c}=2.5 K. The normal state electronic structure is studied via angle-resolved photoemission spectroscopy and density-functional theory, which categorize CsV_{3}Sb_{5} as a Z_{2} topological metal. Multiple protected Dirac crossings are predicted in close proximity to the Fermi level (E_{F}), and signatures of normal state correlation effects are also suggested by a high-temperature charge density wavelike instability. The implications for the formation of unconventional superconductivity in this material are discussed.
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Affiliation(s)
- Brenden R Ortiz
- Materials Department and California Nanosystems Institute, University of California Santa Barbara, Santa Barbara, California 93106, USA
| | - Samuel M L Teicher
- Materials Department and California Nanosystems Institute, University of California Santa Barbara, Santa Barbara, California 93106, USA
| | - Yong Hu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Julia L Zuo
- Materials Department and California Nanosystems Institute, University of California Santa Barbara, Santa Barbara, California 93106, USA
| | - Paul M Sarte
- Materials Department and California Nanosystems Institute, University of California Santa Barbara, Santa Barbara, California 93106, USA
| | - Emily C Schueller
- Materials Department and California Nanosystems Institute, University of California Santa Barbara, Santa Barbara, California 93106, USA
| | - A M Milinda Abeykoon
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Matthew J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439-4845, USA
| | - Stephan Rosenkranz
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439-4845, USA
| | - Raymond Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439-4845, USA
| | - Ram Seshadri
- Materials Department and California Nanosystems Institute, University of California Santa Barbara, Santa Barbara, California 93106, USA
| | - Leon Balents
- Kavli Institute for Theoretical Physics, University of California, Santa Barbara, Santa Barbara, California 93106, USA
| | - Junfeng He
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Stephen D Wilson
- Materials Department and California Nanosystems Institute, University of California Santa Barbara, Santa Barbara, California 93106, USA
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7
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Khoury JF, Rettie AJE, Robredo I, Krogstad MJ, Malliakas CD, Bergara A, Vergniory MG, Osborn R, Rosenkranz S, Chung DY, Kanatzidis MG. The Subchalcogenides Ir 2In 8Q (Q = S, Se, Te): Dirac Semimetal Candidates with Re-entrant Structural Modulation. J Am Chem Soc 2020; 142:6312-6323. [PMID: 32160464 DOI: 10.1021/jacs.0c00809] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Subchalcogenides are uncommon compounds where the metal atoms are in unusually low formal oxidation states. They bridge the gap between intermetallics and semiconductors and can have unexpected structures and properties because of the exotic nature of their chemical bonding as they contain both metal-metal and metal-main group (e.g., halide, chalcogenide) interactions. Finding new members of this class of materials presents synthetic challenges as attempts to make them often result in phase separation into binary compounds. We overcome this difficulty by utilizing indium as a metal flux to synthesize large (millimeter scale) single crystals of novel subchalcogenide materials. Herein, we report two new compounds Ir2In8Q (Q = Se, Te) and compare their structural and electrical properties to the previously reported Ir2In8S analogue. Ir2In8Se and Ir2In8Te crystallize in the P42/mnm space group and are isostructural to Ir2In8S, but also have commensurately modulated (with q vectors q = 1/6a* + 1/6b* and q = 1/10a* + 1/10b* for Ir2In8Se and Ir2In8Te, respectively) low-temperature phase transitions, where the chalcogenide anions in the channels experience a distortion in the form of In-Q bond alternation along the ab plane. Both compounds display re-entrant structural behavior, where the supercells appear on cooling but revert to the original subcell below 100 K, suggesting competing structural and electronic interactions dictate the overall structure. Notably, these materials are topological semimetal candidates with symmetry-protected Dirac crossings near the Fermi level and exhibit high electron mobilities (∼1500 cm2 V-1 s-1 at 1.8 K) and moderate carrier concentrations (∼1020 cm-3) from charge transport measurements. This work highlights metal flux as a synthetic route to high quality single crystals of novel intermetallic subchalcogenides with Dirac semimetal behavior.
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Affiliation(s)
- Jason F Khoury
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Alexander J E Rettie
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States.,Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, London WC1E 7JE, United Kingdom
| | - Iñigo Robredo
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, Donostia-San Sebastian 20018, Spain.,Condensed Matter Physics Department, University of the Basque Country UPV/EHU, Bilbao 48080, Spain
| | - Matthew J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Christos D Malliakas
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Aitor Bergara
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, Donostia-San Sebastian 20018, Spain.,Condensed Matter Physics Department, University of the Basque Country UPV/EHU, Bilbao 48080, Spain.,Centro de Física de Materiales, Centro Mixto CSIC-UPV/EHU, Donostia 20018, Spain
| | - Maia G Vergniory
- Condensed Matter Physics Department, University of the Basque Country UPV/EHU, Bilbao 48080, Spain.,Ikerbasque, Basque Foundation for Science, Bilbao E-48011, Spain
| | - Raymond Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Stephan Rosenkranz
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Duck Young Chung
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.,Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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8
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Krogstad MJ, Rosenkranz S, Wozniak JM, Jennings G, Ruff JPC, Vaughey JT, Osborn R. Reciprocal space imaging of ionic correlations in intercalation compounds. Nat Mater 2020; 19:63-68. [PMID: 31636421 DOI: 10.1038/s41563-019-0500-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
The intercalation of alkali ions into layered materials has played an essential role in battery technology since the development of the first lithium-ion electrodes. Coulomb repulsion between the intercalants leads to ordering of the intercalant sublattice, which hinders ionic diffusion and impacts battery performance. While conventional diffraction can identify the long-range order that can occur at discrete intercalant concentrations during the charging cycle, it cannot determine short-range order at other concentrations that also disrupt ionic mobility. In this Article, we show that the use of real-space transforms of single-crystal diffuse scattering, measured with high-energy synchrotron X-rays, allows a model-independent measurement of the temperature dependence of the length scale of ionic correlations along each of the crystallographic axes in sodium-intercalated V2O5. The techniques described here provide a new way of probing the evolution of structural ordering in crystalline materials.
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Affiliation(s)
- Matthew J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Stephan Rosenkranz
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Justin M Wozniak
- Data Science and Learning Division, Argonne National Laboratory, Lemont, IL, USA
| | - Guy Jennings
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA
| | - Jacob P C Ruff
- Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY, USA
| | - John T Vaughey
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
| | - Raymond Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA.
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9
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Krogstad MJ, Rosenkranz S, Wozniak JM, Jennings G, Ruff JPC, Vaughey JT, Osborn R. Author Correction: Reciprocal space imaging of ionic correlations in intercalation compounds. Nat Mater 2019; 18:1384. [PMID: 31666686 DOI: 10.1038/s41563-019-0545-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Affiliation(s)
- Matthew J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Stephan Rosenkranz
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Justin M Wozniak
- Data Science and Learning Division, Argonne National Laboratory, Lemont, IL, USA
| | - Guy Jennings
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA
| | - Jacob P C Ruff
- Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY, USA
| | - John T Vaughey
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
| | - Raymond Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA.
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10
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Davenport MA, Krogstad MJ, Whitt LM, Rosekranz S, Osborn R, Allred JM. Two-dimensional ordering phase brought on by the destabilization of the VO 2 rutile structure in V 0.81Mo 0.19O 2. Acta Crystallogr A Found Adv 2019. [DOI: 10.1107/s0108767319097678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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11
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Allred JM, Davenport MA, Krogstad MJ, Whitt LM, Rosenkranz S, Osborn R. Using group–subgroup relations to understand the structural instability in rutile VO 2. Acta Crystallogr A Found Adv 2019. [DOI: 10.1107/s0108767319098878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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12
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Krogstad MJ, Gehring PM, Rosenkranz S, Osborn R, Ye F, Liu Y, Ruff JPC, Chen W, Wozniak JM, Luo H, Chmaissem O, Ye ZG, Phelan D. The relation of local order to material properties in relaxor ferroelectrics. Nat Mater 2018; 17:718-724. [PMID: 29941922 DOI: 10.1038/s41563-018-0112-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
Correlating electromechanical and dielectric properties with nanometre-scale order is the defining challenge for the development of piezoelectric oxides. Current lead (Pb)-based relaxor ferroelectrics can serve as model systems with which to unravel these correlations, but the nature of the local order and its relation to material properties remains controversial. Here we employ recent advances in diffuse scattering instrumentation to investigate crystals that span the phase diagram of PbMg1/3Nb2/3O3-xPbTiO3 (PMN-xPT) and identify four forms of local order. From the compositional dependence, we resolve the coupling of each form to the dielectric and electromechanical properties observed. We show that relaxor behaviour does not correlate simply with ferroic diffuse scattering; instead, it results from a competition between local antiferroelectric correlations, seeded by chemical short-range order, and local ferroic order. The ferroic diffuse scattering is strongest where piezoelectricity is maximal and displays previously unrecognized modulations caused by anion displacements. Our observations provide new guidelines for evaluating displacive models and hence the piezoelectric properties of environmentally friendly next-generation materials.
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Affiliation(s)
- M J Krogstad
- Materials Science Division, Argonne National Laboratory, Argonne, IL, USA
- Department of Physics, Northern Illinois University, DeKalb, IL, USA
| | - P M Gehring
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - S Rosenkranz
- Materials Science Division, Argonne National Laboratory, Argonne, IL, USA
| | - R Osborn
- Materials Science Division, Argonne National Laboratory, Argonne, IL, USA
| | - F Ye
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Y Liu
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - J P C Ruff
- CHESS, Cornell University, Ithaca, NY, USA
| | - W Chen
- Department of Chemistry and 4D LABS, Simon Fraser University, Burnaby, British Columbia, Canada
| | - J M Wozniak
- Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, IL, USA
- Computation Institute, University of Chicago and Argonne National Laboratory, Chicago, IL, USA
| | - H Luo
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
| | - O Chmaissem
- Materials Science Division, Argonne National Laboratory, Argonne, IL, USA
- Department of Physics, Northern Illinois University, DeKalb, IL, USA
| | - Z-G Ye
- Department of Chemistry and 4D LABS, Simon Fraser University, Burnaby, British Columbia, Canada
| | - D Phelan
- Materials Science Division, Argonne National Laboratory, Argonne, IL, USA.
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13
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Phelan D, Krogstad MJ, Gehring PM, Rosenkranz S, Osborn R, Ye F, Liu Y, Ruff JPC, Ye ZG, Wozniak JM. The various contributions to the diffuse scattering from PMN- xPT. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s0108767317097215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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14
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Bugaris DE, Malliakas CD, Han F, Calta NP, Sturza M, Krogstad MJ, Osborn R, Rosenkranz S, Ruff JPC, Trimarchi G, Bud’ko SL, Balasubramanian M, Chung DY, Kanatzidis MG. Charge Density Wave in the New Polymorphs of RE2Ru3Ge5 (RE = Pr, Sm, Dy). J Am Chem Soc 2017; 139:4130-4143. [DOI: 10.1021/jacs.7b00284] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel E. Bugaris
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Christos D. Malliakas
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Fei Han
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Nicholas P. Calta
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Mihai Sturza
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Leibniz
Institute for Solid State and Materials Research Dresden IFW, Institute for Solid State Research, 01069 Dresden, Germany
| | - Matthew J. Krogstad
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Department
of Physics, Northern Illinois University, DeKalb, Illinois 60115, United States
| | - Raymond Osborn
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Stephan Rosenkranz
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Jacob P. C. Ruff
- Cornell
High Energy Synchrotron Source, Cornell University, Ithaca, New York 14853, United States
| | - Giancarlo Trimarchi
- Department
of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, United States
| | - Sergey L. Bud’ko
- Division of Materials Science & Engineering, Ames Laboratory, and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
| | | | - Duck Young Chung
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Mercouri G. Kanatzidis
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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