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Zhou S, Xiao E, Ma H, Gofryk K, Jiang C, Manley ME, Hurley DH, Marianetti CA. Phonon Thermal Transport in UO_{2} via Self-Consistent Perturbation Theory. Phys Rev Lett 2024; 132:106502. [PMID: 38518342 DOI: 10.1103/physrevlett.132.106502] [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: 10/13/2023] [Revised: 01/17/2024] [Accepted: 02/12/2024] [Indexed: 03/24/2024]
Abstract
Computing thermal transport from first-principles in UO_{2} is complicated due to the challenges associated with Mott physics. Here, we use irreducible derivative approaches to compute the cubic and quartic phonon interactions in UO_{2} from first principles, and we perform enhanced thermal transport computations by evaluating the phonon Green's function via self-consistent diagrammatic perturbation theory. Our predicted phonon lifetimes at T=600 K agree well with our inelastic neutron scattering measurements across the entire Brillouin zone, and our thermal conductivity predictions agree well with previous measurements. Both the changes due to thermal expansion and self-consistent contributions are nontrivial at high temperatures, though the effects tend to cancel, and interband transitions yield a substantial contribution.
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Affiliation(s)
- Shuxiang Zhou
- Idaho National Laboratory, Idaho Falls, Idaho 83415, USA
| | - Enda Xiao
- Department of Chemistry, Columbia University, New York, New York 10027, USA
| | - Hao Ma
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | | | - Chao Jiang
- Idaho National Laboratory, Idaho Falls, Idaho 83415, USA
| | | | - David H Hurley
- Idaho National Laboratory, Idaho Falls, Idaho 83415, USA
| | - Chris A Marianetti
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
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Borgekov DB, Kozlovskiy AL, Zdorovets MV, Shakirzyanov RI, Kenzhina IE, Shlimas DI. Synthesis and Characterization of the Properties of (1-x)Si 3N 4-xAl 2O 3 Ceramics with Variation of the Components. Materials (Basel) 2023; 16:1961. [PMID: 36903076 PMCID: PMC10003777 DOI: 10.3390/ma16051961] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/24/2023] [Accepted: 02/26/2023] [Indexed: 06/18/2023]
Abstract
The aim of this paper is to study the effect of variation in the component ratio of (1-x)Si3N4-xAl2O3 ceramics on the phase composition, strength and thermal properties of ceramics. To obtain ceramics and their further study, the solid-phase synthesis method combined with thermal annealing of samples at a temperature of 1500 °C typical for the initialization of phase transformation processes was used. The relevance and novelty of this study lies in obtaining new data on the processes of phase transformations with a variation in the composition of ceramics, as well as determining the effect of the phase composition on the resistance of ceramics to external influences. According to X-ray phase analysis data, it was found that an increase in the Si3N4 concentration in the composition of ceramics leads to a partial displacement of the tetragonal phase of SiO2 and Al2(SiO4)O and an increase in the contribution of Si3N4. Evaluation of the optical properties of the synthesized ceramics depending on the ratio of the components showed that the formation of the Si3N4 phase leads to an increase in the band gap and the absorbing ability of the ceramics due to the formation of additional absorption bands from 3.7-3.8 eV. Analysis of the strength dependences showed that an increase in the contribution of the Si3N4 phase with subsequent displacement of the oxide phases leads to a strengthening of the ceramic by more than 15-20%. At the same time, it was found that a change in the phase ratio leads to the hardening of ceramics, as well as an increase in crack resistance.
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Affiliation(s)
- Daryn B. Borgekov
- Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan
| | - Artem L. Kozlovskiy
- Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan
- Department of General Physics, Satbayev University, Almaty 050032, Kazakhstan
| | - Maxim V. Zdorovets
- Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan
- Department of Intelligent Information Technologies, Ural Federal University, 620075 Yekaterinburg, Russia
| | - Rafael I. Shakirzyanov
- Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan
| | - Inesh E. Kenzhina
- Department of General Physics, Satbayev University, Almaty 050032, Kazakhstan
- Advanced Electronics Development Laboratory, Kazakh-British Technical University, 59 Tole bi St., Almaty 050000, Kazakhstan
| | - Dmitriy I. Shlimas
- Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan
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Zhang X, Liu R, Wang H, Liu L, Yue C. Fabrication of Phosphate-Containing Mesoporous Carbon for Fast and Efficient Uranium (VI) Extraction. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.130994] [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: 01/20/2023]
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Vallejo KD, Kabir F, Poudel N, Marianetti CA, Hurley DH, Simmonds PJ, Dennett CA, Gofryk K. Advances in actinide thin films: synthesis, properties, and future directions. Rep Prog Phys 2022; 85:123101. [PMID: 36179676 DOI: 10.1088/1361-6633/ac968e] [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: 03/04/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Actinide-based compounds exhibit unique physics due to the presence of 5f electrons, and serve in many cases as important technological materials. Targeted thin film synthesis of actinide materials has been successful in generating high-purity specimens in which to study individual physical phenomena. These films have enabled the study of the unique electron configuration, strong mass renormalization, and nuclear decay in actinide metals and compounds. The growth of these films, as well as their thermophysical, magnetic, and topological properties, have been studied in a range of chemistries, albeit far fewer than most classes of thin film systems. This relative scarcity is the result of limited source material availability and safety constraints associated with the handling of radioactive materials. Here, we review recent work on the synthesis and characterization of actinide-based thin films in detail, describing both synthesis methods and modeling techniques for these materials. We review reports on pyrometallurgical, solution-based, and vapor deposition methods. We highlight the current state-of-the-art in order to construct a path forward to higher quality actinide thin films and heterostructure devices.
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Affiliation(s)
- Kevin D Vallejo
- Condensed Matter and Materials Physics, Idaho National Laboratory, Idaho Falls, ID 83415,United States of America
| | - Firoza Kabir
- Condensed Matter and Materials Physics, Idaho National Laboratory, Idaho Falls, ID 83415,United States of America
- Glenn T Seaborg Institute, Idaho National Laboratory, Idaho Falls, ID 83415, United States of America
| | - Narayan Poudel
- Condensed Matter and Materials Physics, Idaho National Laboratory, Idaho Falls, ID 83415,United States of America
| | - Chris A Marianetti
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, United States of America
| | - David H Hurley
- Condensed Matter and Materials Physics, Idaho National Laboratory, Idaho Falls, ID 83415,United States of America
| | - Paul J Simmonds
- Department of Physics, Boise State University, Boise, ID 83725, United States of America
- Micron School of Materials Science and Engineering, Boise State University, Boise, ID 83725,United States of America
| | - Cody A Dennett
- Condensed Matter and Materials Physics, Idaho National Laboratory, Idaho Falls, ID 83415,United States of America
| | - Krzysztof Gofryk
- Condensed Matter and Materials Physics, Idaho National Laboratory, Idaho Falls, ID 83415,United States of America
- Glenn T Seaborg Institute, Idaho National Laboratory, Idaho Falls, ID 83415, United States of America
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Kumar Mazumder S, Kaur Salaken Singh M, Kumagai T, El-Azab A. Atomistically-informed modeling of point defect clustering and evolution in irradiated ThO2. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Khanolkar AR, Dennett CA, Hua Z, Mann JM, Hurley D, Khafizov M. Inferring Relative Dose-dependent Color Center Populations in Proton Irradiated Thoria Single Crystals using Optical Spectroscopy. Phys Chem Chem Phys 2022; 24:6133-6145. [DOI: 10.1039/d1cp05191a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have utilized photoluminescence spectroscopy and optical ellipsometry to characterize the dose-dependence of the photoluminescence emission intensity and changes in optical absorption of thoria single crystals subject to irradiation with...
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