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Impact of planetary ball milling parameters on the microstructure and pinning properties of polycrystalline superconductor Y3Ba5Cu8Oy

机译:行星球铣削参数对多晶超导体Y3Ba5cu8oy微观结构和钉扎特性的影响

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摘要

We have reported the influence of planetary high energy ball milling parameters on morphology, microstructure and flux pinning capability of polycrystalline Y3Ba5Cu8Oy. Samples were prepared through the standard solid-state reaction by using two different milling methods, ball milling in a planetary crusher and hand grinding in a mortar. Phase analysis by X-ray diffraction (XRD) method, microstructural examination by scanning electron microscope (SEM), electrical resistivity, the global and intra-granular critical current densities measurements are done to characterize the samples. The processing parameters of the planetary milling have a considerable impact on the final product properties. SEM observations show the presence of nanoscale entities submerged within the Y3Ba5Cu8Oy crystallites. The results show that the fine grain microstructure of the Y3Ba5Cu8Oy bulk induced by ball milling process contributes to critical currents density enhancement in the magnetic field and promotes an optimized flux pinning ability.
机译:我们已经报道了行星高能球铣削参数对多晶Y3Ba5cue8oy的形态,微观结构和磁通钉钉的影响。通过使用两种不同的铣削方法,在行星破碎机中的球磨机中通过标准固态反应制备样品,并在砂浆中磨削。通过X射线衍射(XRD)方法,通过扫描电子显微镜(SEM),电阻率,全局和颗粒内临界电流密度测量来表征样品的微观结构检查。行星铣削的加工参数对最终产品性质具有相当大的影响。 SEM观察显示蒙皮在Y3BA5Cu8oy微晶中蒙皮的存在。结果表明,球磨过程诱导的Y3BA5Cu8oy体积的细粒微观结构有助于磁场中的临界电流强度增强,促进优化的磁通鉴定能力。

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