Theoretical study of magnetic phase transitions of cubic SrMnO3 under physical and chemical pressures

标题

Theoretical study of magnetic phase transitions of cubic SrMnO3 under physical and chemical pressures

作者

作者:Chen, XY (Chen, Xing-Yuan)^[1,2,3 ]; Zhu, WL (Zhu, Wei-ling)^[1 ]; Lin, SY (Lin, Shi-Yuan)^[2,3 ]; Zhao, YJ (Zhao, Yu-Jun)^[2,3 ]

期刊信息

摘要

A magnetic configuration phase transition from antiferromagnetic (AFM) to ferromagnetic (FM) ordering is observed in cubic SrMnO3 under negative pressure of - 9 GPa by density functional calculations, while the ground state of G-type AFM ordering is maintained under the positive pressure. To realize the negative pressure, SrMnO3 with chemical pressure by Sr site doping of Ba and La ions is further investigated, respectively. It is found that the required negative pressure is reduced by similar to 1 GPa for the cubic SrMnO3 favoring FM configuration when doped with Ba, though it keeps C-or G-AFM under positive pressures. In addition, the stability of G-AFM configuration is destroyed in cubic SrMnO3 when doped with La under various pressures. (C) 2013 Elsevier B.V. All rights reserved.

关键词

作者关键词:Magnetic configuration; Phase transition; Pressure; Doping

作者信息

作者信息

通讯作者地址:Zhao, YJ (通讯作者)

S China Univ Technol, Dept Phys, Guangzhou 510640, Peoples R China.   增强组织信息的名称     South China University of Technology

地址:

	[ 1 ] Guangdong Univ Petrochem Technol, Sch Sci, Dept Phys, Maoming 525000, Guangdong, Peoples R China   增强组织信息的名称     Guangdong University of Petrochemical Technology
	[ 2 ] S China Univ Technol, Dept Phys, Guangzhou 510640, Peoples R China   增强组织信息的名称     South China University of Technology
	[ 3 ] S China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510640, Peoples R China   增强组织信息的名称     South China University of Technology

电子邮件地址:zhaoyj@scut.edu.cn

出版商

ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS

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