کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8163354 1525220 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modification of physical and structural properties of Bi1.8Pb0.4Sr2Ca2.2Cu3Oy ceramics induced by annealing
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Modification of physical and structural properties of Bi1.8Pb0.4Sr2Ca2.2Cu3Oy ceramics induced by annealing
چکیده انگلیسی
The effect of annealing temperatures on the structural and superconducting properties of Bi-2223 ceramics prepared by the solid state reaction method has been investigated. Annealing temperatures were varied from 730 to 830 °C while time was kept constant at 50 h. Electrical resistivity studies showed that samples annealed at 830 °C for 50 h have the lowest resistivity values at room temperature while critical transition temperature increases slightly. XRD data have shown that all samples contain Bi-2223 as the major one. The highest diamagnetism behavior has been found in the sample treated at 830 °C. In addition, Jc values of the samples, calculated from the hysteresis loops using the Bean's model, decreased with increasing annealing temperatures until 780 °C and increase for the highest annealing temperature which is 830 °C for this work.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 426, 1 October 2013, Pages 85-89
نویسندگان
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