| 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
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| 2010
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| 发表期刊 | Inorganic Chemistry
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| ISSN | 0020-1669
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| 卷号 | 49期号:7页码:3216-3223 |
| 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. |
| 部门归属 | [wang, yang; sui, yu; wang, xianjie; su, wenhui] harbin inst technol, ccmst, dept phys, harbin 150001, peoples r china. [wang, yang; ren, peng; wang, lan; fan, hong jin] nanyang technol univ, div phys & appl phys, sch phys & math sci, singapore 637371, singapore. [sui, yu] acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;sui, y (reprint author), harbin inst technol, ccmst, dept phys, harbin 150001, peoples r china;suiyu@hit.edu.cn fanhj@ntu.edu.sg
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| 关键词 | Neutron-diffraction
Transport-properties
Electronic-structure
Lacoo3
La1-xsrxcoo3
Oxide
La0.95sr0.05coo3
Thermopower
Transition
Ca3co4o9
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| URL | 查看原文
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| WOS记录号 | WOS:000276073000023
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/31537
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| 专题 | 中国科学院金属研究所
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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.
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| 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.
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| 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.
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