中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
The heat capacity measurements of CoSb3-based Skutterudite compounds

文献类型:期刊论文

作者Zhang, YB ; Li, CR ; Xu, GY ; Du, ZM ; Guo, CP ; Li, JB
刊名INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
出版日期2010
卷号101期号:6页码:808
关键词SUBSTITUTED COSB3 SKUTTERUDITE THERMOELECTRIC PROPERTIES
ISSN号1862-5282
通讯作者Li, CR (reprint author), Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China.
中文摘要We have observed the transport properties in magnetic tunnel junction with the multilayered structure: La(0.67)Sr(0.33)MnO(3) (50 nm)/Al-O (1 nm)/CoFeB (5 nm)/Ta (10 nm)/Ru (10 nm). The maximum normal tunneling magnetoresistance (TMR) ratio was found to be 12.4% at a temperature range around 100 K, and the maximum inverse TMR ratio was observed to be similar to 3% at a temperature of 5 K. The inverse TMR decreases with increasing temperature until it reaches a temperature range of around 50 K, whereby it switches to the normal TMR behavior. The appearance of inverse TMR at low temperatures is attributed to the presence of minority-spin density of states (DOS) of half-metal La(0.67)Sr(0.33)MnO(3) around the Fermi level present at the half-metal-insulator interface. The vanishing of inverse TMR and increase of normal TMR above certain temperature range is due to no contribution from the minority-spin DOS in the tunneling process. These results were found to be reproducible and the TMR ratio of more than 3% and 11% was obtained at room temperature before and after annealing at a temperature of 235 K for an annealing time of one hour, respectively.
收录类别SCI
资助信息National Natural Science Foundation of China [50671009, 50731002]; National Doctorate Fund of the State Education Ministry of China [20060008015]
语种英语
公开日期2013-09-23
源URL[http://ir.iphy.ac.cn/handle/311004/45198]  
专题物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式
GB/T 7714
Zhang, YB,Li, CR,Xu, GY,et al. The heat capacity measurements of CoSb3-based Skutterudite compounds[J]. INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,2010,101(6):808.
APA Zhang, YB,Li, CR,Xu, GY,Du, ZM,Guo, CP,&Li, JB.(2010).The heat capacity measurements of CoSb3-based Skutterudite compounds.INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,101(6),808.
MLA Zhang, YB,et al."The heat capacity measurements of CoSb3-based Skutterudite compounds".INTERNATIONAL JOURNAL OF MATERIALS RESEARCH 101.6(2010):808.

入库方式: OAI收割

来源:物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。