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The Electrical Conductivity and Infrared Properties of Ba-Doped SmCoO3-δ Composite Oxides

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Abstract:

Layered SmBaCo2O5+δ with the cation-ordered double perovskite structure were synthesized by the solid-state reaction route and characterized by thermal analysis, X-ray diffraction, infrared spectrum, electrical conductivity and infrared emissivity. The Sm1-xBaxCoO3 (SBCO) system shows the different crystal structures with the variation of barium content, which results in the different electrical behavior. The electrical conductivity reaches maximum when x is 0.5 with SmBaCo2O5.54 phase. The infrared absorption occurs at about 600 cm-1 for all the samples which were attributed to Co-O stretching modes. The peak shifted to a lower frequency with the increase of doping level. In addition, the comparison of electrical and emissivity measurements suggested that variation of infrared emissivity is in agreement with the electrical properties.

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Advanced Materials, CEAM 2011 View Preview

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Periodical:

Advanced Materials Research (Volumes 239-242)

Pages:

687-690

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.239-242.687

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Online since:

May 2011

Authors:

Le Chen, Chun Hua Lu, Yuan Zheng Zhao, Wen Yan Zhang, Ya Ru Ni, Zhong Zi Xu

Keywords:

Electrical Properties, Infrared Emissivity, Infrared Spectrum, Samarium Barium Cobalt Oxide

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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