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测量了高质量的GdBa_2Cu_3O_(7-x)薄膜的电阻及磁阻曲线,应用Lawrence-Doniach理论对实验曲线进行了拟合,得到了一组自洽且合理的参数值,由ln(σ—σ_(?))-Int曲线可以明显地看到存在一个二维向三维的转变。
The resistance and reluctance curves of high quality GdBa_2Cu_3O_ (7-x) thin films were measured. The experimental curves were fitted by Lawrence-Doniach theory. A set of self-consistent and reasonable parameter values were obtained from ln (σ-σ_ (?)) - The Int curve clearly shows that there is a two-dimensional to three-dimensional transition.