Magnetic properties and critical behavior of the perovskite manganite La0.825Sr0.175MnO3

被引：8

作者：

Wang, Jing ^{[1
,2
]}

Fan, Jiyu ^{[1
]}

Liu, Fengguang ^{[2
]}

Zu, Lin ^{[2
]}

Zheng, Huan ^{[1
]}

Liu, Hao ^{[1
]}

Ma, Chunlan ^{[3
]}

Wang, Caixia ^{[4
]}

Qian, Fengjiao ^{[1
]}

Zhu, Yan ^{[1
]}

Yang, Hao ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, MIIT, Dept Appl Phys, Key Lab Aerosp Informat Mat & Phys NUAA, Nanjing 210016, Peoples R China

[2] Beihang Univ, Hefei Innovat Res Inst, Hefei 230013, Peoples R China

[3] Suzhou Univ Sci & Technol, Sch Math & Phys, Jiangsu Key Lab Micro & Nano Heat Fluid Flow Techn, Suzhou 215009, Peoples R China

[4] Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225002, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2022年 / 807卷

关键词：

Critical behavior; Transition temperature; Manganite; EQUATION-OF-STATE; PHASE-SEPARATION; DOUBLE-EXCHANGE; TRANSITION; CHARGE; NICKEL;

D O I：

10.1016/j.cplett.2022.140119

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polycrystalline La0.825Sr0.175MnO3 was prepared by solid state reaction method. It exhibits a ferromagneticparamagnetic phase transition at T-C similar to 286 K. The intrinsic magnetic properties were clarified by the scaling theory and the isothermal magnetization measured around T-C. Based on the modified Arrott plot, KouvelFisher method and Widom relation, the critical exponents are determined to be beta = 0.308(7), gamma = 1.065(8), delta = 4.457(17). Normalization of the critical exponents shows that the extended exchange interaction decays with J similar to r(-4.861), consistent with Tricritical mean field model. Rhodes-Wohlfarth ratio P-C/M-S>1 suggests that La0.825Sr0.175MnO3 is completely itinerant ferromagnet.

引用

页数：7

共 39 条

[1] CRITERION FOR FERROMAGNETISM FROM OBSERVATIONS OF MAGNETIC ISOTHERMS [J].