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首页> 外文期刊>Japanese Journal of Applied Physics. Part 2, Letters & Express Letters >Anisotropy and Lorentz-Force Dependences of Critical Current Density in C-Axis-Oriented YBa_2Cu_3O_(7-δ) Thin Film
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Anisotropy and Lorentz-Force Dependences of Critical Current Density in C-Axis-Oriented YBa_2Cu_3O_(7-δ) Thin Film

机译：C轴取向YBa_2Cu_3O_（7-δ）薄膜中临界电流密度的各向异性和洛伦兹力依赖性

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摘要

The magnetic field angular dependence of J_c(θ) for a c-axis-oriented YBa_2Cu_3O_(7-δ) (YBCO) thin film was measured using both constant and variable Lorentz force configurations. When the field was tilted from the c-axis within ±30°, J_c(θ) was independent of the intensity of the Lorentz force. This demonstrates that the vortices have bent segments trapped by pinning centers that extend parallel to the c-axis, and J_c(θ) is limited by the depinning of these segments. The effect on J_c(θ) of the two types of pinning centers, i.e., either parallel to the c-axis or to the ab plane, should be considered when the field is tilted from the ab plane within ±30°.
机译：使用恒定和可变洛伦兹力配置测量了c轴取向YBa_2Cu_3O_（7-δ）（YBCO）薄膜的J_c（θ）的磁场角度依赖性。当场从c轴倾斜±30°时，J_c（θ）与洛伦兹力的强度无关。这表明涡旋具有弯曲的段，这些段被平行于c轴延伸的钉扎中心捕获，并且J_c（θ）受这些段的钉扎限制。当磁场从ab平面倾斜±30°时，应考虑这两种类型的固定中心对J_c（θ）的影响，即平行于c轴或ab平面。

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