Magnetization sign reversal, spin-glass-like state and Griffiths-like phase driven by B-site disorder in double perovskite Gd2CrMnO6

被引：2
|
作者：
Ruan, M. Y. [1 ]
Li, T. Y. [2 ,3 ]
Wang, L. [2 ,3 ]
Luo, Q. C. [4 ]
机构：
[1] Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China
[2] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China
[3] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
[4] Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Appl Chem Res, Xian 710054, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 940卷
基金：
中国国家自然科学基金;
关键词：
Double perovskite; B -site disorder; Magnetization sign reversal; Griffiths -like phase; Spin -glass -like state; EXCHANGE BIAS; MAGNETOCALORIC PROPERTIES; COEXISTENCE; BEHAVIOR;
D O I：
10.1016/j.jallcom.2023.168787
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：
The crystal structure and magnetic order of the double perovskite Gd2CrMnO6 have been investigated systematically by employing magnetization and ESR measurement for the first time. Structure analysis revealed that the Gd2CrMnO6 crystallizes in the adopted B-site disorder orthorhombic structure with space group of Pbnm. Magnetization measurements indicated that the system possesses a long-range anti-ferromagnetic ordering at TN = 40 K. In Gd2CrMnO6, the magnetization sign reversal was observed below Tcomp = -27 K due to the Dzyaloshinskii-Moriya antisymmetric interaction of Cr3+-O2--Mn3+ and the dif-ferent sublattice of Gd3+ and Cr3+/Mn3+. The competing magnetic interaction is greatly enhanced by FM 3d -4f interaction and should be responsible for the Griffiths-like phase (TG -260 K) and spin-glass-like state. (c) 2023 Elsevier B.V. All rights reserved.
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页数：8
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