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Magnetic properties of La0.7Sr0.3MnO3 under the pressure and the transport property under the magnetic field

文献类型：期刊论文

作者Zhang, Xian2,3,4; Han, YuYan1; Kan, Xucai2; Wang, Min2; Rao, Rui2; Zheng, Ganhong2; Ma, Yongqing2,4
刊名JOURNAL OF THE AMERICAN CERAMIC SOCIETY
出版日期2020-10-06
关键词double exchange Jahn-Teller distortion La0.7Sr0.3MnO3 magnetic properties pressure
ISSN号0002-7820
DOI10.1111/jace.17495
通讯作者Han, YuYan(yyhan@hmfl.ac.cn) ; Ma, Yongqing(yqma@ahu.edu.cn)
英文摘要Polycrystalline La0.7Sr0.3MnO3 sample (LSMO) was synthesized by the solid phase reaction; it exhibits the paramagnetic-ferromagnetic transition at T-c = 362 K at the ambient pressure; it is paramagnetic metallic state above T-c and the ferromagnetic metallic state below T-c. It was observed that the pressure effect depends on the temperature range: (a) In the paramagnetic region, the magnetizationMhardly changes with the pressure P, that is, Delta M approximate to 0. There exist the antiferromagnetic (AFM) coupled ferromagnetic clusters in the paramagnetic region, and the pressure enhances the AFM coupling. (b) In the temperature range around T-c, the pressure increases M, that is, Delta M > 0, with the concomitant increase in T-c; the average pressure coefficient dT(c)/dP is 5.40 K/GPa at P = .74 GPa, much smaller than 15.47 and 15.90 K/GPa for La0.7Ca0.3MnO3 and La0.9Ca0.1MnO3, respectively, due to the different distortion degree of MnO(6)octahedra in Ca and Sr doped manganites. (c) In the temperature region below T-c, the pressure reduces M, that is, Delta M Mis determined by the competition between the Mn3+-O-Mn4+ double exchange and the interparticle dipolar interaction. The pressure enhances the interparticle dipolar interaction, leading to a significant decrease in magnetization. The resistivity of LSMO exhibits the metallic behavior in the temperature range of 5 K similar to 370 K; it decreases as the applied magnetic fieldHincreases from 0 to 7 T, that is, the magnetoresistance effect which is more significant around T-c. The fitting to the low-temperature resistivity shows that the applied magnetic field reduces the scattering from the grain boundary, electron, phonon, and magnon, especially reduces the electron-electron scattering.
WOS关键词ELECTRICAL-PROPERTIES ; DOUBLE-EXCHANGE ; MAGNETORESISTANCE ; COMPOSITES ; SIZE
资助项目National Natural Science Foundation of China[51802002] ; National Natural Science Foundation of China[U19A2093] ; Anhui University
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000575385200001
出版者WILEY
资助机构National Natural Science Foundation of China ; Anhui University
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/104323]  
专题中国科学院合肥物质科学研究院
通讯作者Han, YuYan; Ma, Yongqing
作者单位1.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230031, Peoples R China
2.Anhui Univ, Sch Phys & Mat Sci, Anhui Key Lab Informat Mat & Deaavices, Hefei 230039, Peoples R China
3.Huainan Normal Univ, Sch Elect Engn, Huainan, Peoples R China
4.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xian,Han, YuYan,Kan, Xucai,et al. Magnetic properties of La0.7Sr0.3MnO3 under the pressure and the transport property under the magnetic field[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2020.
APA Zhang, Xian.,Han, YuYan.,Kan, Xucai.,Wang, Min.,Rao, Rui.,...&Ma, Yongqing.(2020).Magnetic properties of La0.7Sr0.3MnO3 under the pressure and the transport property under the magnetic field.JOURNAL OF THE AMERICAN CERAMIC SOCIETY.
MLA Zhang, Xian,et al."Magnetic properties of La0.7Sr0.3MnO3 under the pressure and the transport property under the magnetic field".JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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