论文部分内容阅读
研究了Y0.928Pr0.072Ba2Cu3O7(后文称YPBCO)单晶在不同温度下的磁特性,计算了不同温度下的钉扎力密度Fp对磁场的依赖关系.结果表明,在不同温度下的钉扎力密度可近似标度在同一条曲线上;标度函数和峰效应引起的最大Jc所对应的磁场与不可逆场的比值都表明,YPBCO单晶在磁通玻璃态的钉扎机制主要是样品中Pr的微观电子分布不均匀性引起的正常相面钉扎.
The magnetic properties of Y0.928Pr0.072Ba2Cu3O7 (hereinafter referred to as YPBCO) single crystal at different temperatures were studied and the dependence of the pinning density Fp on the magnetic field at different temperatures was calculated. The results show that the pinning at different temperatures The approximate density scale can be approximated on the same curve. The ratio of the magnetic field to the irreversible field corresponding to the maximum Jc caused by the scaling function and the peak effect indicates that the pinning mechanism of the YPBCO single crystal in the flux glass state is mainly in the sample Normal facet pinning caused by inhomogeneous microscopic electron distribution of Pr.