Effect of Ca Doping on Crystal Structure of the Misfit-Layered Bi-Sr-Co-O Thermoelectric Materials

Xue Lian Tang; Kun Yu Zhao; Zhi Dong Li; Zhao Biao Meng

doi:10.4028/www.scientific.net/AMR.634-638.2450

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638Effect of Ca Doping on Crystal Structure of the...

Effect of Ca Doping on Crystal Structure of the Misfit-Layered Bi-Sr-Co-O Thermoelectric Materials

Abstract:

The series of Bi-Sr-Co-O thermoelectric materials Bi₂Sr₂Co₂O_y (BC-2202), Bi₂SrCaCo₂O_y (BC-2112), Bi₂Sr₂CaCo₂O_y (BC-2212) were prepared by conventional solid-reaction process. The crystal structure of Bi-Sr-Co-O compound were analyzed by XRD and TEM. The results show that the diffraction peak shift to the high angle, the interlayer spacing decrease with the Ca doping, however, the diffracion peaks of BC-2212 weak with the sintering temperature increased. The reason for that is some Ca can not enter the lattice while the Ca improved by whole mole.

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Advanced Materials Research (Volumes 634-638)

Pages:

2450-2453

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.2450

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Online since:

January 2013

Authors:

Xue Lian Tang, Kun Yu Zhao, Zhi Dong Li, Zhao Biao Meng

Keywords:

Bi-Sr-Ca-Co-O, Crystal Structure, Thermoelectric Material, X-Ray Diffraction (XRD)

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