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Structural and Magnetic Properties Control of Pr0.7Ba0.3MnO3 with Sr-Doping
Полная версия: 10.1134/S1063783420050236 
1Department of Physics, College of Natural Science, Chungbuk National University, Cheongju, South Korea 
2Department of Mechanical and Aerospace Engineering, University of California, San Diego, California, USA
3Amirkhanov Institute of Physics, DSC of RAS, Makhachkala, Russia
4Department of Energy Resources Engineering, Stanford University, Stanford, CA, USA
5School of Natural Science, Ulsan National Institute of Science and Technology, Ulsan, South Korea
6Department of Physics, College of Education, Chungbuk National University, Cheongju, South Korea
2Department of Mechanical and Aerospace Engineering, University of California, San Diego, California, USA
3Amirkhanov Institute of Physics, DSC of RAS, Makhachkala, Russia
4Department of Energy Resources Engineering, Stanford University, Stanford, CA, USA
5School of Natural Science, Ulsan National Institute of Science and Technology, Ulsan, South Korea
6Department of Physics, College of Education, Chungbuk National University, Cheongju, South Korea
Email: donghyun@chungbuk.ac.kr
Поступила в редакцию: 30 декабря 2019 г.
Выставление онлайн: 25 марта 2020 г.
Structural and magnetic properties of Sr-doped Pr0.7Ba0.3MnO3 polycrystallines prepared by solid state reaction are presented. Samples were in monoclinic structure P21/n without structural phase transition when Ba was gradually replaced by Sr. Parameters a,b, and c of a unit cell monotonously decrease with increasing Sr content, while beta angle has increased from 89.981o to 90.007o. The X-ray absorption spectra show the co-existence of Mn3+ and Mn4+ ions in materials and the number of Mn4+ ions increases in the presence of Sr. The thermal magnetization data indicate that the Curie temperature shifts toward room temperature from 190, 210, 232 to 267 K with increasing Sr content x from 0 to 0.3. Keywords: structure, magnetic property, phase transition, valence, magnetic interaction.
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Дата начала обработки статистических данных - 27 января 2016 г.
