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Enhancement of the spin entropy in NaxCo2O4 by Ni doping
Tang, Guodong1; Yang, Teng2,3; Xu, Xiaonong1; Tang, Chipui1; Qiu, Li1; Zhang, Zhidong2,3; Lv, Liya1; Wang, Zhihe1; Du, Youwei1
Corresponding AuthorTang, Guodong()
2010-07-19
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume97Issue:3Pages:3
AbstractThe 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]
Keyworddoping profiles entropy magnetocaloric effects nickel sodium compounds spin dynamics X-ray absorption spectra
Funding OrganizationMOST 973 Program of China ; State Key Program for Basic Research of China
DOI10.1063/1.3467205
Indexed BySCI
Language英语
Funding ProjectMOST 973 Program of China[2009CB929501] ; State Key Program for Basic Research of China[2010CB923403]
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000280255800047
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/100280
Collection中国科学院金属研究所
Corresponding AuthorTang, Guodong
Affiliation1.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
Recommended Citation
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.
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