Thermoelectric Response Driven by Spin-State Transition in La1-xCexCoO3 Perovskites

doi:10.1021/am100243e

IMR OpenIR

	Thermoelectric Response Driven by Spin-State Transition in La1-xCexCoO3 Perovskites
	Wang, Yang 1,2; Sui, Yu 1,3; Wang, Xianjie 1; Su, Wenhui 1; Cao, Wenwu 1,4; Liu, Xiaoyang 5
通讯作者	Sui, Yu(suiyu@hit.edu.cn)
	2010-08-01
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
卷号	2 期号:8 页码:2213-2217
摘要	An unusual thermoelectric response was observed in n-type perovskite oxide La1-xCexCoO3. Combining transport and magnetic measurements, we found that the thermoelectric response is driven by the spin-state transition of Co3+. This transition destroys the spin blockade effect and induces an abrupt decrease of resistivity as well as an insulator metal transition. In contrast to the resistivity change, changes in thermopower and thermal conductivity are moderate. Consequently, a peak of figure of the merit ZT is present in a narrow temperature range. The room-temperature ZT approximate to 0.018 of La0.94Ce0.06CoO3 is comparable to that of p-type NaxCoO2. These observations can be helpful for the search and design of new thermoelectric materials.
关键词	thermoelectric electron-doping spin-state transition spin blockade configuration entropy
资助者	Scientific Research Foundation for the Returned Overseas Chinese Scholars (State Education Ministry), ; Natural Scientific Research innovation foundation in Harbin Institute of Technology ; National Natural Science Foundation of China
DOI	10.1021/am100243e
收录类别	SCI
语种	英语
资助项目	Scientific Research Foundation for the Returned Overseas Chinese Scholars (State Education Ministry), ; Natural Scientific Research innovation foundation in Harbin Institute of Technology[HIT. NSRIF.2009056] ; National Natural Science Foundation of China[10804024]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000281109300009
出版者	AMER CHEMICAL SOC
引用统计	被引频次：17[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/321006/102122
专题	中国科学院金属研究所
通讯作者	Sui, Yu
作者单位	1.Harbin Inst Technol, CCMST, Dept Phys, Harbin 150001, Peoples R China 2.Nanyang Technol Univ, Div Phys & Appl Phys, Sch Phys & Math Sci, Singapore 637371, Singapore 3.Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China 4.Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA 5.Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Coll Chem, Changchun 130012, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yang,Sui, Yu,Wang, Xianjie,et al. Thermoelectric Response Driven by Spin-State Transition in La1-xCexCoO3 Perovskites[J]. ACS APPLIED MATERIALS & INTERFACES,2010,2(8):2213-2217.
APA	Wang, Yang,Sui, Yu,Wang, Xianjie,Su, Wenhui,Cao, Wenwu,&Liu, Xiaoyang.(2010).Thermoelectric Response Driven by Spin-State Transition in La1-xCexCoO3 Perovskites.ACS APPLIED MATERIALS & INTERFACES,2(8),2213-2217.
MLA	Wang, Yang,et al."Thermoelectric Response Driven by Spin-State Transition in La1-xCexCoO3 Perovskites".ACS APPLIED MATERIALS & INTERFACES 2.8(2010):2213-2217.