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

doi:10.1111/jace.17495

HFCAS OpenIR

	Magnetic properties of La0.7Sr0.3MnO3 under the pressure and the transport property under the magnetic field
	Zhang, Xian1,2,3 ; Han, YuYan4 ; Kan, Xucai 1; Wang, Min 1; Rao, Rui 1; Zheng, Ganhong 1; Ma, Yongqing 1,3
	2020-10-06
发表期刊	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN	0002-7820
通讯作者	Han, YuYan(yyhan@hmfl.ac.cn) ; Ma, Yongqing(yqma@ahu.edu.cn)
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.
关键词	double exchange Jahn-Teller distortion La0.7Sr0.3MnO3 magnetic properties pressure
DOI	10.1111/jace.17495
关键词[WOS]	ELECTRICAL-PROPERTIES ; DOUBLE-EXCHANGE ; MAGNETORESISTANCE ; COMPOSITES ; SIZE
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51802002] ; National Natural Science Foundation of China[U19A2093] ; Anhui University
项目资助者	National Natural Science Foundation of China ; Anhui University
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000575385200001
出版者	WILEY
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/104324
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.Anhui Univ, Sch Phys & Mat Sci, Anhui Key Lab Informat Mat & Deaavices, Hefei 230039, Peoples R China 2.Huainan Normal Univ, Sch Elect Engn, Huainan, Peoples R China 3.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei, Peoples R China 4.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230031, 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).