Enhancement of the spin entropy in NaxCo2O4 by Ni doping

doi:10.1063/1.3467205

IMR OpenIR

	Enhancement of the spin entropy in NaxCo2O4 by Ni doping
	Tang, Guodong 1; Yang, Teng 2,3; Xu, Xiaonong 1; Tang, Chipui 1; Qiu, Li 1; Zhang, Zhidong 2,3; Lv, Liya 1; Wang, Zhihe 1; Du, Youwei 1
通讯作者	Tang, Guodong()
	2010-07-19
发表期刊	APPLIED PHYSICS LETTERS
ISSN	0003-6951
卷号	97 期号:3 页码:3
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]
关键词	doping profiles entropy magnetocaloric effects nickel sodium compounds spin dynamics X-ray absorption spectra
资助者	MOST 973 Program of China ; State Key Program for Basic Research of China
DOI	10.1063/1.3467205
收录类别	SCI
语种	英语
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
WOS类目	Physics, Applied
WOS记录号	WOS:000280255800047
出版者	AMER INST PHYSICS
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/100280
专题	中国科学院金属研究所
通讯作者	Tang, Guodong
作者单位	1.Nanjing Univ, Natl Lab Solid State Microstruct, Dept Phys, Nanjing 210093, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Natl Lab Mat Sci, Shenyang 110016, 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.