Search for half-metallic ferromagnetism in orthorhombic Ce(Fe/Cr)O3 perovskites

被引：61

作者：

Abbad, A. ^{[1
]}

Benstaali, W. ^{[2
]}

Bentounes, H. A. ^{[1
]}

Bentata, S. ^{[2
]}

Benmalem, Y. ^{[1
]}

机构：

[1] Abdelhamid Ibn Badis Univ, Fac Sci & Technol, Signals & Syst Lab LSS, BP227, Mostaganem 27000, Algeria

[2] Abdelhamid Ibn Badis Univ, Fac Sci & Technol, Lab Technol & Solids Properties, BP227, Mostaganem 27000, Algeria

来源：

SOLID STATE COMMUNICATIONS | 2016年 / 228卷

关键词：

Perovskites; Orthorombic; Electronic structure; First-principles; AB-INITIO CALCULATIONS; OPTICAL-PROPERTIES; COMPOUND; SPINTRONICS; TRANSITION; SE;

D O I：

10.1016/j.ssc.2015.12.005

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The full-potential linearized augmented plane wave (FPLAPW) method based on the density functional theory within the GGA and GGA+U, is used to investigate the structural, magnetic and half-metallic properties of the Pnma orthorhombic Cerium orthoferrite (CeFeO3) and Cerium orthochromite (CeFeO3). The calculated densities of states presented in this study identify the metallic behavior CeFeO3 when we use the GGA scheme, whereas when we use the GGA+U, we see that its exhibits half metallic character with an integer magnetic moment of 24 mu B per formula unit at its equilibrium volume. CeCrO3 is half-metallic for both approaches and of n type conductivity for GGA but p type conductivity for GGA+U. It is found that the majority of the magnetic moments of both compounds originate from the cerium sites since the f states of Ce are spin polarized. From the band structure and the densities of states analysis, we find that CeCrO3 and CeFeO3 are strong candidates for spintronic applications. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：36 / 42

页数：7

共 41 条

[1] LINEAR METHODS IN BAND THEORY [J].