Spin-entropy origin and scaling behavior of the thermopower of LaBaCoO

IMR OpenIR

	Spin-entropy origin and scaling behavior of the thermopower of LaBaCoO
	Zhang, Dewei; Guo, Huaihong; Yang, Teng; Qiu, Li; Wang, Zhihe; Dai, Yujie; Zhang, Zhidong; Du, Youwei; yangteng@imr.ac.cn; zhwang@nju.edu.cn
	2016
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	42 期号:5 页码:6296-6300
摘要	We report a detailed investigation of the thermopower and magnetic properties of La-0.95 Ba0.05CoO3. The large negative magnetothermopower is found to scale with both magnetic field and temperature, indicating a spin-entropy contribution to the thermpower. We formulate a new general expression to describe the thermopower from spin entropy with spin-interaction considered. The scaling behaviour is analyzed in a theoretical model, which provides a satisfactory description of the observed data. The magnetic results further support our analysis. This investigation shows that spin entropy plays a substantial role in the thermopower. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
部门归属	[zhang, dewei ; qiu, li ; wang, zhihe ; du, youwei] nanjing univ, dept phys, natl lab solid state microstruct, nanjing 210093, jiangsu, peoples r china ; [guo, huaihong ; dai, yujie] liaoning shihua univ, coll sci, fushun 113001, peoples r china ; [zhang, dewei] yancheng inst technol, sch mat engn, yancheng 224051, peoples r china ; [guo, huaihong ; yang, teng ; zhang, zhidong] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china
关键词	Cobalt Oxides Thermopower Spin Entropy
资助者	MOST 973 Program of China [2009CB929501]; State Key Program for Basic Research of China [2010CB923403, 2012CB933103]; NSFC [51072077, 11204134, U1537204, 51331006]; Natural Science Foundation of Jiangsu Province [BK2012404, BK20140469]; Research Foundation of Yancheng Institute of Technology [KJC2014003]; Key Research Program of Chinese Academy of Sciences [KGZD-EW-T06]; Liaoning Shihua University
收录类别	sci
语种	英语
WOS记录号	WOS:000370884500083
引用统计	被引频次：3[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/321006/75127
专题	中国科学院金属研究所
通讯作者	yangteng@imr.ac.cn; zhwang@nju.edu.cn
推荐引用方式 GB/T 7714	Zhang, Dewei,Guo, Huaihong,Yang, Teng,et al. Spin-entropy origin and scaling behavior of the thermopower of LaBaCoO[J]. CERAMICS INTERNATIONAL,2016,42(5):6296-6300.
APA	Zhang, Dewei.,Guo, Huaihong.,Yang, Teng.,Qiu, Li.,Wang, Zhihe.,...&zhwang@nju.edu.cn.(2016).Spin-entropy origin and scaling behavior of the thermopower of LaBaCoO.CERAMICS INTERNATIONAL,42(5),6296-6300.
MLA	Zhang, Dewei,et al."Spin-entropy origin and scaling behavior of the thermopower of LaBaCoO".CERAMICS INTERNATIONAL 42.5(2016):6296-6300.