Influences of P doping on magnetic phase transition and structure in MnCoSi ribbon
The structure and magnetic properties of MnCoSil_xPx (x = 0.054).50) are systematically investigated. With P content increasing, the lattice parameter a increases monotonically while both b and c decrease. At the same time, the temperature of metamagnetic transition from a low-temperature non-collin...
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Published in | Chinese physics B Vol. 24; no. 6; pp. 551 - 555 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
01.06.2015
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Subjects | |
Online Access | Get full text |
ISSN | 1674-1056 2058-3834 1741-4199 |
DOI | 10.1088/1674-1056/24/6/067502 |
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Summary: | The structure and magnetic properties of MnCoSil_xPx (x = 0.054).50) are systematically investigated. With P content increasing, the lattice parameter a increases monotonically while both b and c decrease. At the same time, the temperature of metamagnetic transition from a low-temperature non-collinear ferromagnetic state to a high-temperature ferromagnetic state decreases and a new magnetic transition from a higher-magnetization ferromagnetic state to a lower- magnetization ferromagnetic state is observed in each of these compounds for the first time. This is explained by the changes of crystal structure and distance between Mn and Si atoms with the increase of temperature according to the high- temperature XRD result. The metamagnetic transition is found to be a second-order magnetic transition accompanied by a low inversed magnetocaloric effect (1.0 J·kg-1 ·K- 1 at 5 T) with a large temperature span (190 K at 5 T) compared with the scenario of MnCoSi. The changes in the order of metamagnetic transition and structure make P-doped MoCoSi compounds good candidates for the study of magnetoelastic coupling and the modulation of magnetic phase transition. |
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Bibliography: | Du Qian-Heng, Chen Guo-Fu, Yang Wen-Yun, Hua Mu-Xin, Du Hong-Lin, Wang Chang-Sheng, Liu Shun-Quan, Han Jing-Zhi, Zhou Dong, Zhang Yan, and Yang Jin-Bo( a) school of Physics, Peking University, Beijing 100871, China b) Central Iron and Steel Research Institute, Beijing 100081, China The structure and magnetic properties of MnCoSil_xPx (x = 0.054).50) are systematically investigated. With P content increasing, the lattice parameter a increases monotonically while both b and c decrease. At the same time, the temperature of metamagnetic transition from a low-temperature non-collinear ferromagnetic state to a high-temperature ferromagnetic state decreases and a new magnetic transition from a higher-magnetization ferromagnetic state to a lower- magnetization ferromagnetic state is observed in each of these compounds for the first time. This is explained by the changes of crystal structure and distance between Mn and Si atoms with the increase of temperature according to the high- temperature XRD result. The metamagnetic transition is found to be a second-order magnetic transition accompanied by a low inversed magnetocaloric effect (1.0 J·kg-1 ·K- 1 at 5 T) with a large temperature span (190 K at 5 T) compared with the scenario of MnCoSi. The changes in the order of metamagnetic transition and structure make P-doped MoCoSi compounds good candidates for the study of magnetoelastic coupling and the modulation of magnetic phase transition. 11-5639/O4 metamagnetic transition, magnetoelastic coupling, magnetocaloric effect ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1674-1056 2058-3834 1741-4199 |
DOI: | 10.1088/1674-1056/24/6/067502 |