Effects of Yb-doping on flux pinning properties in YBa2Cu3O7-δ
来源期刊：Journal of Rare Earths2010年第S1期
论文作者：徐胜 顾艳妮 吴小山
文章页码：431 - 433
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.
徐胜1，顾艳妮1，吴小山2
1. Jiangsu University of Science and Technology2. Department of Physics,Nanjing University
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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