Magnetic property under the pressure and electrical transport behavior under the magnetic field for the perovskite manganite La0.7Ca0.3MnO3
文献类型：期刊论文
| 作者 | Rao, R.1,2 ; Han, Y. Y.3; Kan, X. C.2; Zhang, X.1,2; Wang, M.2; Qian, N. X.2; Zheng, G. H.2; Ma, Y. Q.1,2
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| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
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| 出版日期 | 2020-10-05 |
| 卷号 | 837 |
| ISSN号 | 0925-8388 |
| 关键词 | Perovskite manganite Pressure Magnetic properties Double-exchange Jahn-Teller distortion |
| DOI | 10.1016/j.jallcom.2020.155476 |
| 通讯作者 | Han, Y. Y.(yyhan@hmfl.ac.cn) ; Ma, Y. Q.(yqma@ahu.edu.cn) |
| 英文摘要 | With respect to the magnetic properties under the pressure for the ferromagnetic metallic system La1-xCaxMnO3(0.18 <= x < 0.5), the main results concluded previously are as follows: the pressure suppresses the Jahn-Teller (J-T) distortion and promotes the Mn3+-O-Mn4+ double-exchange (DE), consequently increasing the magnetization and metallic conduction as well as the paramagnetic-ferromagnetic transition temperature (T-c). In this work, the magnetic properties under the pressure and the electrical transportation under the magnetic field for La0.7CaO3MnO3 polycrystalline were investigated. The pressure induces the antiferromagnetic coupling of the ferromagnetic clusters in the paramagnetic region above T-c, suppresses the J-T distortion around T-c and enhances the DE interaction, hence increasing T-c, and enhances the distortion of MnO6 octahedra in the ferromagnetic metallic region below T-c, resulting in the decrease of magnetization. The pressure induces the variation of anisotropy at the temperature far above T-c. These facts confirm that the effects of pressure depend on the ground-state properties of charge, spin and lattice. The resistivity measured under the different magnetic fields exhibits the magnetoresistance (MR) effects. MR appears a peak at 255 K, due to the enhanced DE interaction by the magnetic field and the increase in the kinetic energy of the eg electrons. (C) 2020 Elsevier B.V. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[U19A2093] ; National Natural Science Foundation of China[51802002] ; open fund for Discipline Construction, Institute of Physical Science and Information Technology, Anhui University |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000546685000010 |
| 资助机构 | National Natural Science Foundation of China ; open fund for Discipline Construction, Institute of Physical Science and Information Technology, Anhui University |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/94806]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Han, Y. Y.; Ma, Y. Q. |
| 作者单位 | 1.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230039, Peoples R China 2.Anhui Univ, Sch Phys & Mat Sci, Anhui Key Lab Informat Mat & Devices, Hefei 230039, Peoples R China 3.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Rao, R.,Han, Y. Y.,Kan, X. C.,et al. Magnetic property under the pressure and electrical transport behavior under the magnetic field for the perovskite manganite La0.7Ca0.3MnO3[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,837. |
| APA | Rao, R..,Han, Y. Y..,Kan, X. C..,Zhang, X..,Wang, M..,...&Ma, Y. Q..(2020).Magnetic property under the pressure and electrical transport behavior under the magnetic field for the perovskite manganite La0.7Ca0.3MnO3.JOURNAL OF ALLOYS AND COMPOUNDS,837. |
| MLA | Rao, R.,et al."Magnetic property under the pressure and electrical transport behavior under the magnetic field for the perovskite manganite La0.7Ca0.3MnO3".JOURNAL OF ALLOYS AND COMPOUNDS 837(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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