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Thermoelectric Response Driven by Spin-State Transition in La1-xCexCoO3 Perovskites
Wang, Yang1,2; Sui, Yu1,3; Wang, Xianjie1; Su, Wenhui1; Cao, Wenwu1,4; Liu, Xiaoyang5
Corresponding AuthorSui, Yu(suiyu@hit.edu.cn)
2010-08-01
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume2Issue:8Pages:2213-2217
AbstractAn 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.
Keywordthermoelectric electron-doping spin-state transition spin blockade configuration entropy
Funding OrganizationScientific 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
DOI10.1021/am100243e
Indexed BySCI
Language英语
Funding ProjectScientific 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 Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000281109300009
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/102122
Collection中国科学院金属研究所
Corresponding AuthorSui, Yu
Affiliation1.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
Recommended Citation
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.
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