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X-ray diffraction study on YBa2Cu3O7−δ with BaCuO2 addition

Published online by Cambridge University Press:  06 March 2012

Sheng Xu ,
Xiaoshan Wu  and
Yanni Gu
Sheng Xu*
Affiliation:
Department of Physics, Nanjing University, Nanjing 210093, China and Zhangjiagang Campus, Jiangsu University of Science and Technology, Zhangjiagang 215600, China
Xiaoshan Wu
Affiliation:
Department of Physics, Nanjing University, Nanjing 210093, China
Yanni Gu
Affiliation:
Zhangjiagang Campus, Jiangsu University of Science and Technology, Zhangjiagang 215600, China
*
a)Author to whom correspondence should be addressed. Electronic mail: xsheng1258@sina.com
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Abstract

Two-phase polycrystalline powder mixtures of YBa2Cu3O7−δ (YBCO) and xBaCuO2 (x=0, 0.05, 0.1, 0.2, and 0.3) were prepared by solid reaction. The Rietveld refinements of X-ray powder diffraction data show that BaCuO2 addition was successfully produced in superconductor YBCO and the unit-cell parameters of YBCO reach a maximum at x=0.05. The critical current density (Jc) also reaches a maximum at x=0.05 and then decreases sharply with increasing amount of BaCuO2. The change of Jc as a function of x was found to be similar to those of the unit-cell parameters. The characteristic behavior of Jc may come from the structure-parameter change of YBCO caused by BaCuO2 addition.

Keywords

YBa2Cu3O7−δ with BaCuO2 additionX-ray diffractionflux pining
Type
Technical Articles
Information
Powder Diffraction , Volume 25 , Supplement S1 , September 2010 , pp. S52 - S54
Copyright
Copyright © Cambridge University Press 2010

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