Room-temperature large magnetocaloric, electronic and magnetic properties in La0.75Sr0.25MnO3 manganite: Ab initio calculations and Monte Carlo simulations

被引：29

作者：

Kadim, G. ^{[1
]}

Masrour, R. ^{[1
]}

Jabar, A. ^{[1
]}

Hlil, E. K. ^{[2
]}

机构：

[1] Sidi Mohamed Ben Abdellah Univ, Fac Sci, Lab Solid Phys, BP 1796, Fes, Morocco

[2] Univ Grenoble Alpes, Inst Neel, CNRS, BP 166, F-38042 Grenoble, France

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2021年 / 573卷

关键词：

La0.75Sr0.25MnO3; perovskite; Magnetocaloric effect; Monte Carlo; Simulation; Ab initio; HALF-METALLICITY; TRANSITION; METAL; PERFORMANCES; CHARGE; SPIN; RE;

D O I：

10.1016/j.physa.2021.125936

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By using the Ab initio and Monte Carlo calculations, we have studied the magnetism of the crystalline La0.75Sr0.25MnO3 perovskite. The ferromagnetic phase of La0.75Sr0.25MnO3 is half-metallic, which is important in the relation to the colossal magnetoresistance properties of this compound. The total magnetic moment and the exchange couplings deduced from ab initio calculations lead, by using Monte Carlo simulations, to a quantitative agreement with the experimental transition temperatures. The maximum magnetic entropy change and the specific heat are found to be 9.23 J K-1 kg(-1) and 191 J mol(-1) K-1, respectively for H = 6 T. Our results suggest that this material a promising candidate for magnetic refrigeration application near to room temperature at moderate fields. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：8

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