کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8018097 1517231 2015 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced flux pinning properties in Bi-2212 high temperature superconductors with nano-sized precipitates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Enhanced flux pinning properties in Bi-2212 high temperature superconductors with nano-sized precipitates
چکیده انگلیسی
Al doped Bi-2212 superconducting bulks with large amounts of nano-sized precipitates have been fabricated by spark plasma sintering (SPS) and subsequent annealing under oxygen. Due to the interferences of Al doping, alkali earth cuprates (AEC, (Ca, Sr)xCuyOz) have precipitated and formed the nanoparticles distributed uniformly in the Bi-2212 matrix. The influences of these precipitates and Al doping on the microstructures, transport and superconducting properties, especially the flux pinning properties have been systematically investigated. The point flux pinning mechanism has been obviously enhanced with the appearance of precipitates. The effects of these nano-sized precipitates on the enhancements of flux pinning properties in Bi-2212 bulks under magnetic field have been proved by both the increased activation energy and the improved flux pinning force.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 157, 15 October 2015, Pages 197-200
نویسندگان
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