Spontaneous magnetostriction and thermal expansibility of TmFeO3 and LuFeO3 rare earth orthoferrites |
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| Institution: | 1. Faculty of Physics and Nuclear Techniques, Stanisław Staszic Academy of Mining and Metallurgy, ul. Władysława Reymonta 19, 30-059 Kraków, Poland;2. Institut für Geowissenschaften, Johannes Gutenberg-Universität Mainz, Johann Joachim Becher Weg 21, 55099 Mainz, Germany;3. Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland;4. Henryk Niewodniczański Institute of Nuclear Physics, ul. Walerego Eljasza Radzikowskiego 152, 31-342 Kraków, Poland;1. Department of Physics, Pukyong National University, Busan 48513, South Korea;2. Department of Physics, Chung-Ang University, Seoul 06974, South Korea;3. Advanced Functional Materials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli 620 015, India;4. Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai 600025, India;1. University of Forestry, 1756 Sofia, Bulgaria;2. University of Architecture, Civil Engineering and Geodesy, 1046 Sofia, Bulgaria;3. University of Sofia, 1164 Sofia, Bulgaria;1. Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, PR China;2. Analysis & Testing Center, Xinyang Normal University, Xinyang 464000, PR China;3. Henan International Joint Laboratory of MXene Materials Microstructure, College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, PR China;1. Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong;2. Department of Materials Science and Engineering, National Chung Hsing University, Taichung 402, Taiwan;3. Department of Physics and Astronomy, University of Manitoba, Winnipeg, R3T2N2, Canada;1. Department of Materials Science and Engineering, Dankook University, South Korea;2. Division of Material Science, Korea Basic Science Institute (KBSI), South Korea;3. Center for Novel States of Complex Materials (CeNSCMR) and Institute of Applied Physics, Department of Physics and Astronomy, Seoul National University, South Korea;4. Department of Materials Science and Engineering, University of Florida, USA;1. Department of Physics, Materials Genome Institute and International Center for Quantum and Molecular Structures, Shanghai University, Shanghai, 200444, China;2. Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China;3. Department of Physics, Hangzhou Normal University, 310036, Hangzhou, China;4. Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai, 200444, China |
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| Abstract: | At low temperatures the TmFeO3 orthoferrite shows a strong spontaneous magnetostriction generated by rare earth Tm atoms. This effect essentially depends on the temperature and orientation of the weak ferromagnetism vector of the Fe sublattice and reaches largest values for the directions 1 0 0] and 0 0 1]. The spin reorientation process in TmFeO3 marks itself mainly in the change of the signs of the linear thermal expansion coefficients in the directions mentioned above. Some additional singularities of thermal dependencies of expansion coefficients are observed below 20 K, which may be due to a magnetic compensation effect in the investigated orthoferrite. |
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