Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-24T08:55:59.588Z Has data issue: false hasContentIssue false

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

Published online by Cambridge University Press:  06 March 2012

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: [email protected]

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.

Type
Technical Articles
Copyright
Copyright © Cambridge University Press 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bean, C. P. (1962). “Weak links and dc SQUIDs on artificial nonsymmetric grain boundaries in YBa2Cu3O7−δ,” Phys. Rev. Lett.PRLTAO 8, 250253.10.1103/PhysRevLett.8.250CrossRefGoogle Scholar
Harada, T. and Yoshida, T. K. (2002). “The effects of Pr-doping on the critical current density in YBa2Cu3O7−δ,” Physica CPHYCE6 383, 4854.10.1016/S0921-4534(02)01261-3Google Scholar
Haugan, T., Barnes, P. N., Wheeler, R., Meisenkothen, F., and Sumption, M. (2004). “Addition of nanoparticle dispersions to enhance flux pinning of the YBa2Cu3O7−δ superconductor,” Nature (London)NATUAS 430, 867870.10.1038/nature02792Google Scholar
MacManus-Driscoll, J. L., Foltyn, S. R., Jia, Q. X., Wang, H., Serquis, A., Civale, L., Maiorov, B., Hawley, M. E., Maley, M. P., and Peterson, D. E. (2004). “Strongly enhanced current densities in superconducting coated conductors of YBa2Cu3O7−δ+BaZrO3,” Nat. Mater. 3, 439443.10.1038/nmat1156Google Scholar
Wang, H., Serquis, A., Maiotov, B., Civale, L., Jia, Q. X., Arent, P. N., Foltyn, S. R., MacManus-Driscoll, J. L., and Zhang, X. (2006). “Microstructure and transport properties of Y-rich YBa2Cu3O7−δ thin film,” J. Appl. Phys.JAPIAU 100, 0539041.Google Scholar
Wu, X. S., Cai, H. L., Hu, A., Jiang, S. S., and Gao, J. (2004). “Thermal expansion and spin gap in the normal state of YBa2Cu3O7−δ with La doping and oxygen-deficiency,” Physica CPHYCE6 402, 8893.10.1016/j.physc.2003.09.002Google Scholar
Wu, X. S., Jiang, S. S., Lam, C. C., Wang, D. W., Huang, X. R., Wu, Z. H., Xuan, Y., and Jin, X. (1996). “X-ray diffraction studies on YBa2Cu3O7−δ with Co substitution,” Phys. Status Solidi APSSABA 157, 439447.10.1002/pssa.2211570228Google Scholar
Xu, S., Wu, X. S., Liu, G., Liu, J. S., Du, J., Jiang, S. S., and Gao, J. (2004). “Structure and spin gap YBa2Cu3−xGdxO7−δ superconductor,” Physica CPHYCE6 417, 6368.10.1016/j.physc.2004.10.008Google Scholar