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Investigations on Gilbert damping, Curie temperatures and thermoelectric properties in CoFeCrZ quaternary Heusler alloys

文献类型：期刊论文

作者Wei, Xiao-Ping1; Gao, Peifeng2; Zhang, Ya-Ling3
刊名CURRENT APPLIED PHYSICS
出版日期2020-04-01
卷号20期号:4页码:593-603
关键词Quaternary heusler alloys Gilbert damping parameters Exchange interactions Curie temperatures Thermoelectric properties
ISSN号1567-1739
DOI10.1016/j.cap.2020.02.007
通讯作者Wei, Xiao-Ping(weixp2008@gmail.com)
英文摘要Exchange interactions and Curie temperatures of CoFeCrZ (Z=P, As, Sb, Ge) quaternary Heusler alloys are studied by using the spin-polarized relativistic Korringa-Kohn-Rostoker method. Electronic calculations show that the CoFeCrZ alloys apart from CoFeCrP are ferromagnetic half-metals, and their integer magnetic moments obey the Slater-Pauling rule. It is confirmed that the calculated Curie temperatures are evidently higher than room temperature. Further, we discuss the dependency of magnetic moments and Curie temperatures with respect to lattice constants. A smaller Gilbert damping parameters imply that these alloys have lower energy loss in spintronics applications. In addition, the thermoelectric properties of CoFeCrZ in both spin channels are calculated based on the BoltzTrap code. Results indicate that the Seebeck coefficients of CoFeCrZ (Z=As, Sb, Ge) are remarkably higher than 1000 mu V/K. Overall, we think that the CoFeCrAs, CoFeCrSb and CoFeCrGe alloys are promising candidates in future spintronic and thermoelectric applications.
WOS关键词ELECTRONIC-STRUCTURE ; MAGNETIC-PROPERTIES ; EXCHANGE INTERACTIONS ; GA ; SB ; AL ; STABILITY ; BAND ; SI
资助项目National Natural Science Foundation of China[11864021] ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Beijing Supercomputing Center
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:000516771300018
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Beijing Supercomputing Center
源URL[http://119.78.100.186/handle/113462/141046]  
专题中国科学院近代物理研究所
通讯作者Wei, Xiao-Ping
作者单位1.Lanzhou Jiaotong Univ, Sch Math & Phys, Lanzhou 730070, Peoples R China
2.Lanzhou Univ, Coll Civil Engn & Mech, Key Lab Mech Western Disaster & Environm, Key Lab Special Funct Mat & Struct Design,Minist, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Xiao-Ping,Gao, Peifeng,Zhang, Ya-Ling. Investigations on Gilbert damping, Curie temperatures and thermoelectric properties in CoFeCrZ quaternary Heusler alloys[J]. CURRENT APPLIED PHYSICS,2020,20(4):593-603.
APA Wei, Xiao-Ping,Gao, Peifeng,&Zhang, Ya-Ling.(2020).Investigations on Gilbert damping, Curie temperatures and thermoelectric properties in CoFeCrZ quaternary Heusler alloys.CURRENT APPLIED PHYSICS,20(4),593-603.
MLA Wei, Xiao-Ping,et al."Investigations on Gilbert damping, Curie temperatures and thermoelectric properties in CoFeCrZ quaternary Heusler alloys".CURRENT APPLIED PHYSICS 20.4(2020):593-603.

入库方式： OAI收割

来源：近代物理研究所

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