Correlation between the Structural Distortions and Thermoelectric Characteristics in La(1-x)A(x)CoO(3) (A = Ca and Sr)

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	Correlation between the Structural Distortions and Thermoelectric Characteristics in La(1-x)A(x)CoO(3) (A = Ca and Sr)
	Y. Wang ; Y. Sui ; P. Ren ; L. Wang ; X. J. Wang ; W. H. Su ; H. J. Fan
刊名	Inorganic Chemistry
	2010
卷号	49 期号:7 页码:3216-3223
关键词	neutron-diffraction transport-properties electronic-structure lacoo3 la1-xsrxcoo3 oxide la0.95sr0.05coo3 thermopower transition ca3co4o9
ISSN号	0020-1669
中文摘要	Detailed structures and thermoelectric (TE) properties are investigated for the perovskite La(1-x)Sr(x)CoO(3) and La(1-x)Sr(x)CoO(3) with 0 <= x <= 0.3. The monoclinic crystal structures for all samples are refined from powder X-ray diffraction, which reveals that the La(1-x)Sr(x)CoO(3) series has smaller global distortions but larger local distortions. The different structural distortions strongly influence the transport and TE properties in terms of resistivity, thermopower, thermal conductivity, bandwidth, and effective mass as well as electronic correlation. These results unambiguously demonstrate a close correlation between the structural distortions and TE characteristics in this family. Furthermore, a new approach is suggested to improve the TE performance by controlling the structure factors in such strongly correlated oxide systems. The effects of the spin-state transition of Co ions on the TE properties are also discussed.
原文出处	://WOS:000276073000023
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31537]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Wang,Y. Sui,P. Ren,et al. Correlation between the Structural Distortions and Thermoelectric Characteristics in La(1-x)A(x)CoO(3) (A = Ca and Sr)[J]. Inorganic Chemistry,2010,49(7):3216-3223.
APA	Y. Wang.,Y. Sui.,P. Ren.,L. Wang.,X. J. Wang.,...&H. J. Fan.(2010).Correlation between the Structural Distortions and Thermoelectric Characteristics in La(1-x)A(x)CoO(3) (A = Ca and Sr).Inorganic Chemistry,49(7),3216-3223.
MLA	Y. Wang,et al."Correlation between the Structural Distortions and Thermoelectric Characteristics in La(1-x)A(x)CoO(3) (A = Ca and Sr)".Inorganic Chemistry 49.7(2010):3216-3223.