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Enhancement of the spin entropy in NaxCo2O4 by Ni doping

文献类型：期刊论文

作者Tang, Guodong2; Yang, Teng1,3; Xu, Xiaonong2; Tang, Chipui2; Qiu, Li2; Zhang, Zhidong1,3; Lv, Liya2; Wang, Zhihe2; Du, Youwei2
刊名APPLIED PHYSICS LETTERS
出版日期2010-07-19
卷号97期号:3页码:3
关键词doping profiles entropy magnetocaloric effects nickel sodium compounds spin dynamics X-ray absorption spectra
ISSN号0003-6951
DOI10.1063/1.3467205
通讯作者Tang, Guodong()
英文摘要The effects of Ni doping on the spin entropy in NaxCo2O4 (x=1.2) has been carefully studied. A strong magnetic-field suppression of the thermopower indicates the emergence of large spin-entropy effect. The magnetothermopower increases with increasing Ni doping level, suggesting that Ni doping improves the spin entropy of NaxCo2O4. Based on analysis of x-ray absorption spectra, we propose a spin-entropy competition mechanism to explain well the spin-entropy enhancement. (C) 2010 American Institute of Physics. [doi:10.1063/1.3467205]
资助项目MOST 973 Program of China[2009CB929501] ; State Key Program for Basic Research of China[2010CB923403]
WOS研究方向Physics
语种英语
WOS记录号WOS:000280255800047
出版者AMER INST PHYSICS
资助机构MOST 973 Program of China ; State Key Program for Basic Research of China
源URL[http://ir.imr.ac.cn/handle/321006/100279]  
专题金属研究所_中国科学院金属研究所
通讯作者Tang, Guodong
作者单位1.Chinese Acad Sci, Inst Met Res, Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Nanjing Univ, Natl Lab Solid State Microstruct, Dept Phys, Nanjing 210093, Peoples R China
3.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Tang, Guodong,Yang, Teng,Xu, Xiaonong,et al. Enhancement of the spin entropy in NaxCo2O4 by Ni doping[J]. APPLIED PHYSICS LETTERS,2010,97(3):3.
APA Tang, Guodong.,Yang, Teng.,Xu, Xiaonong.,Tang, Chipui.,Qiu, Li.,...&Du, Youwei.(2010).Enhancement of the spin entropy in NaxCo2O4 by Ni doping.APPLIED PHYSICS LETTERS,97(3),3.
MLA Tang, Guodong,et al."Enhancement of the spin entropy in NaxCo2O4 by Ni doping".APPLIED PHYSICS LETTERS 97.3(2010):3.

入库方式： OAI收割

来源：金属研究所

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