Effects of Yb-doping on flux pinning properties in YBa 2 Cu 3 O 7-δ
摘要
The effects of Yb-doping on the critical current density(Jc) and the critical temperature(Tc) in YBa2Cu3O7-δ(YBCO) were investigated.Rietveld refinements of X-ray diffraction showed that Yb3+ ions had partly substituted Y sites in YBCO and the unit cell volume V decreased monotonically as x increasing.Although Tc almost had no change with increasing Yb-concentration,the increase of Jc occurred as a field was applied and displayed a maximum at x=0.08.We argued that the formation of nanometric inhomogeneity may lead to the enhancement of pinning force.
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徐胜, 顾艳妮, 吴小山. Effects of Yb-doping on flux pinning properties in YBa 2 Cu 3 O 7-δ[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2010.
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