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Gorbachev EA, Trusov LA, Alyabyeva LN, Roslyakov IV, Lebedev VA, Kozlyakova ES, Magdysyuk OV, Sobolev AV, Glazkova IS, Beloshapkin SA, Gorshunov BP, Kazin PE. High-coercivity hexaferrite ceramics featuring sub-terahertz ferromagnetic resonance. MATERIALS HORIZONS 2022; 9:1264-1272. [PMID: 35112123 DOI: 10.1039/d1mh01797g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Herein, we demonstrate for the first time compact ferrite ceramics with giant coercivity. The materials are manufactured via sintering single-domain Sr0.67Ca0.33Fe8Al4O19 particles synthesized by a citrate-nitrate auto-combustion method. The obtained ceramics show coercivities up to 22.5 kOe and natural ferromagnetic resonance frequencies (NFMR) in a sub-THz range of 160-282 GHz. At a maximum density of 95%, the sample displays coercivity of 18.5 kOe, which is the highest value among dense ferrite materials reported so far. In addition, we report an unusual blueshift of the NFMR frequency from 160 to 200 GHz, which occurs during material sintering.
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Affiliation(s)
- Evgeny A Gorbachev
- Department of Materials Science, Lomonosov Moscow State University, Moscow 119991, Russia
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia.
- Department of Materials Science, MSU-BIT University, Shenzhen, Guangdong Province 517182, P. R. China
| | - Lev A Trusov
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia.
- Department of Materials Science, MSU-BIT University, Shenzhen, Guangdong Province 517182, P. R. China
| | - Liudmila N Alyabyeva
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Ilya V Roslyakov
- Department of Materials Science, Lomonosov Moscow State University, Moscow 119991, Russia
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia.
- Kurnakov Institute of General and Inorganic Chemistry RAS, Moscow 119991, Russia
| | - Vasily A Lebedev
- Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | | | - Oxana V Magdysyuk
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
| | - Alexey V Sobolev
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia.
| | - Iana S Glazkova
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia.
| | | | - Boris P Gorshunov
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Pavel E Kazin
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia.
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Trusov LA, Sleptsova AE, Duan J, Gorbachev EA, Kozlyakova ES, Anokhin EO, Eliseev AA, Karpov MA, Vasiliev AV, Brylev OA, Kazin PE. Glass-Ceramic Synthesis of Cr-Substituted Strontium Hexaferrite Nanoparticles with Enhanced Coercivity. NANOMATERIALS 2021; 11:nano11040924. [PMID: 33916445 PMCID: PMC8065585 DOI: 10.3390/nano11040924] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/27/2021] [Accepted: 04/01/2021] [Indexed: 11/16/2022]
Abstract
Magnetically hard ferrites attract considerable interest due to their ability to maintain a high coercivity of nanosized particles and therefore show promising applications as nanomagnets ranging from magnetic recording to biomedicine. Herein, we report an approach to prepare nonsintered single-domain nanoparticles of chromium-substituted hexaferrite via crystallization of glass in the system SrO-Fe2O3-Cr2O3-B2O3. We have observed a formation of plate-like hexaferrite nanoparticles with diameters changing from 20 to 190 nm depending on the annealing temperature. We demonstrated that chromium substitution led to a significant improvement of the coercivity, which varied from 334 to 732 kA m-1 for the smallest and the largest particles, respectively. The results provide a new strategy for producing high-coercivity ferrite nanomagnets.
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Affiliation(s)
- Lev A. Trusov
- Faculty of Materials Science, MSU-BIT University, Shenzhen 517182, China; (J.D.); (E.A.G.); (O.A.B.)
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
- Correspondence:
| | | | - Jingtong Duan
- Faculty of Materials Science, MSU-BIT University, Shenzhen 517182, China; (J.D.); (E.A.G.); (O.A.B.)
| | - Evgeny A. Gorbachev
- Faculty of Materials Science, MSU-BIT University, Shenzhen 517182, China; (J.D.); (E.A.G.); (O.A.B.)
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Ekaterina S. Kozlyakova
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;
- Laboratory of Functional Quantum Materials, National University of Science and Technology “MISiS”, 119049 Moscow, Russia
| | - Evgeny O. Anokhin
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Artem A. Eliseev
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
| | - Maxim A. Karpov
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
| | - Alexander V. Vasiliev
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
| | - Oleg A. Brylev
- Faculty of Materials Science, MSU-BIT University, Shenzhen 517182, China; (J.D.); (E.A.G.); (O.A.B.)
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Pavel E. Kazin
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
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Naruta T, Akita T, Uchida Y, Lisjak D, Mertelj A, Nishiyama N. Magnetically controllable random laser in ferromagnetic nematic liquid crystals. OPTICS EXPRESS 2019; 27:24426-24433. [PMID: 31510331 DOI: 10.1364/oe.27.024426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 06/13/2019] [Indexed: 06/10/2023]
Abstract
This paper first reports random laser action in dye-doped ferromagnetic nematic liquid crystals, which act as a randomly distributed cavity. The random laser intensity of the ferromagnetic nematic liquid crystals can be controlled by a weak magnetic field (∼1 mT). Moreover, the magnetic switching of random laser is attributed to the direction and polarization dependent emission of light in the ferromagnetic nematic liquid crystals in an external magnetic field.
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Grindi B, BenAli A, Magen C, Viau G. M-SrFe 12 O 19 and ferrihydrite-like ultrathin nanoplatelets as building blocks for permanent magnets: HAADF-STEM study and magnetic properties. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.05.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cao L, Zeng Y, Ye Z, Wang Z, Zhang Y, Zhao L, Li C, Zhang C. Preparation of 2D α-Fe2O3 platelets via a hydrothermal heterogeneous growth approach and study of their magnetic properties. NEW J CHEM 2017. [DOI: 10.1039/c7nj00547d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
(001)-exposed α-Fe2O3 platelets can be synthesized via a hydrothermal process by producing BaFe12O19 nuclei as cores for heterogeneous growth.
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Affiliation(s)
- Liangliang Cao
- State Key Laboratory of Materials-oriented Chemical Engineering
- School of Materials Science and Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Yanwei Zeng
- State Key Laboratory of Materials-oriented Chemical Engineering
- School of Materials Science and Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Zhupeng Ye
- State Key Laboratory of Materials-oriented Chemical Engineering
- School of Materials Science and Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Zhentao Wang
- State Key Laboratory of Materials-oriented Chemical Engineering
- School of Materials Science and Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Yuan Zhang
- State Key Laboratory of Materials-oriented Chemical Engineering
- School of Materials Science and Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Longfei Zhao
- State Key Laboratory of Materials-oriented Chemical Engineering
- School of Materials Science and Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Chuanming Li
- State Key Laboratory of Materials-oriented Chemical Engineering
- School of Materials Science and Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Chengzhe Zhang
- State Key Laboratory of Materials-oriented Chemical Engineering
- School of Materials Science and Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
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Shuai M, Klittnick A, Shen Y, Smith GP, Tuchband MR, Zhu C, Petschek RG, Mertelj A, Lisjak D, Čopič M, Maclennan JE, Glaser MA, Clark NA. Spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates. Nat Commun 2016; 7:10394. [PMID: 26817823 PMCID: PMC4738347 DOI: 10.1038/ncomms10394] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 12/08/2015] [Indexed: 11/18/2022] Open
Abstract
Ferrofluids are familiar as colloidal suspensions of ferromagnetic nanoparticles in aqueous or organic solvents. The dispersed particles are randomly oriented but their moments become aligned if a magnetic field is applied, producing a variety of exotic and useful magnetomechanical effects. A longstanding interest and challenge has been to make such suspensions macroscopically ferromagnetic, that is having uniform magnetic alignment in the absence of a field. Here we report a fluid suspension of magnetic nanoplates that spontaneously aligns into an equilibrium nematic liquid crystal phase that is also macroscopically ferromagnetic. Its zero-field magnetization produces distinctive magnetic self-interaction effects, including liquid crystal textures of fluid block domains arranged in closed flux loops, and makes this phase highly sensitive, with it dramatically changing shape even in the Earth's magnetic field. Ferromagnetism has been known as a material property of solids since the time of the ancient Greeks. Here, Shuai et al. report that magnetic nanoplates suspended in a simple solvent can spontaneously align to form a ferromagnetic liquid, capable of both producing and sensing magnetic fields.
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Affiliation(s)
- M Shuai
- Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA
| | - A Klittnick
- Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA
| | - Y Shen
- Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA
| | - G P Smith
- Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA
| | - M R Tuchband
- Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA
| | - C Zhu
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R G Petschek
- Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - A Mertelj
- Jozef Stefan Institute, SI-1000 Ljubljana, Slovenia
| | - D Lisjak
- Jozef Stefan Institute, SI-1000 Ljubljana, Slovenia
| | - M Čopič
- Jozef Stefan Institute, SI-1000 Ljubljana, Slovenia.,Faculty of Mathematics and Physics, University of Ljubljana, SI-1000 Ljubljana, Slovenia
| | - J E Maclennan
- Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA
| | - M A Glaser
- Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA
| | - N A Clark
- Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA
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Ferk G, Krajnc P, Hamler A, Mertelj A, Cebollada F, Drofenik M, Lisjak D. Monolithic Magneto-Optical Nanocomposites of Barium Hexaferrite Platelets in PMMA. Sci Rep 2015; 5:11395. [PMID: 26066069 PMCID: PMC4464329 DOI: 10.1038/srep11395] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 05/20/2015] [Indexed: 12/01/2022] Open
Abstract
The incorporation of magnetic barium hexaferrite nanoparticles in a transparent polymer matrix of poly(methyl methacrylate) (PMMA) is reported for the first time. The barium hexaferrite nanoplatelets doped with Sc3+, i.e., BaSc0.5Fe11.5O12 (BaHF), having diameters in the range 20 to 130 nm and thicknesses of approximately 5 nm, are synthesized hydrothermally and stabilized in 1-butanol with dodecylbenzenesulfonic acid. This method enables the preparation of monolithic nanocomposites by admixing the BaHF suspension into a liquid monomer, followed by in-situ, bulk free-radical polymerization. The PMMA retains its transparency for loadings of BaHF nanoparticles up to 0.27 wt.%, meaning that magnetically and optically anisotropic, monolithic nanocomposites can be synthesized when the polymerization is carried out in a magnetic field. The excellent dispersion of the magnetic nanoparticles, coupled with a reasonable control over the magnetic properties achieved in this investigation, is encouraging for the magneto-optical applications of these materials.
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Affiliation(s)
- Gregor Ferk
- University of Maribor, Faculty of Chemistry and Chemical Engineering, 2000 Maribor, Slovenia
| | - Peter Krajnc
- University of Maribor, Faculty of Chemistry and Chemical Engineering, 2000 Maribor, Slovenia
| | - Anton Hamler
- University of Maribor, Faculty of Electrical Engineering and Computer Science, 2000 Maribor, Slovenia
| | - Alenka Mertelj
- Jožef Stefan Institute, Department for Complex Matter, 1000 Ljubljana, Slovenia
| | - Federico Cebollada
- Universidad Politécnica de Madrid, POEMMA-CEMDATIC, ETSI de Telecomunicación, 28040 Madrid, Spain
| | - Miha Drofenik
- 1] University of Maribor, Faculty of Chemistry and Chemical Engineering, 2000 Maribor, Slovenia [2] Jožef Stefan Institute, Department for Materials Synthesis, 1000 Ljubljana, Slovenia
| | - Darja Lisjak
- Jožef Stefan Institute, Department for Materials Synthesis, 1000 Ljubljana, Slovenia
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Lisjak D, Jenuš P, Mertelj A. Influence of the morphology of ferrite nanoparticles on the directed assembly into magnetically anisotropic hierarchical structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:6588-6595. [PMID: 24841592 DOI: 10.1021/la5012633] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The effect of the morphology of ferrite nanoparticles on their assembly in a magnetic field was studied. Thin BaFe12O19 nanoplatelets were compared with isotropic, spherical or octahedral, CoFe2O4 nanoparticles, all of which were synthesized hydrothermally. The nanoplatelets and nanoparticles assembled into a variety of hierarchical structures from stable suspensions during the "drop deposition" and drying in a magnetic field. The alignment of the nanoparticles in the magnetic field was observed in situ with an optical microscope. The morphologies of the nanoparticles and the subsequent assemblies were observed with transmission and scanning electron microscopes, respectively. The magnetic properties of the nanoparticles and the assemblies were measured with a vibrating-sample magnetometer. The BaFe12O19 nanoplatelets aligned in the plane of the substrate and formed several-micrometers-thick, ordered films with a magnetic alignment of approximately 90%. The CoFe2O4 nanoparticles assembled into thick, dense columns with a height of several hundreds of micrometers and showed a magnetic alignment of up to 60%. The differences in the morphologies and the magnetic alignments between the BaFe12O19 and CoFe2O4 hierarchical structures could be explained in terms of the differences in the shape and magnetocrystalline structure of the specific nanoparticles.
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Affiliation(s)
- Darja Lisjak
- Department for Materials Synthesis, Jožef Stefan Institute , Ljubljana, Slovenia
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Kort KR, Banerjee S. Oriented Electrophoretic Deposition of GdOCl Nanoplatelets. J Phys Chem B 2012; 117:1585-91. [DOI: 10.1021/jp3051142] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kenneth R. Kort
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York, 14260, United States
| | - Sarbajit Banerjee
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York, 14260, United States
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Lisjak D, Ovtar S. The Alignment of Barium Ferrite Nanoparticles from Their Suspensions in Electric and Magnetic Fields. J Phys Chem B 2012; 117:1644-50. [DOI: 10.1021/jp305256t] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Darja Lisjak
- Department for Materials Synthesis, Jožef Stefan Institute, 1000 Ljubljana, Slovenia
| | - Simona Ovtar
- Department for Materials Synthesis, Jožef Stefan Institute, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, 1000 Ljubljana, Slovenia
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