کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7888477 | 1509793 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of heat treatment on the microstructure, flux pinning and magnetic properties of bulk BSCCO samples prepared by sol-gel route
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We study the combined influence of calcination and sintering temperature on the microstructure, superconducting and pinning properties of Bi1.6Pb0.4Sr2Ca2Cu3O10+θ (Bi-2223) prepared by the sol-gel route. Using several characterization techniques, including X-rays diffractometry and electrical transport measurements, we find that the powders calcined at 820 °C often result in a crystal higher critical current density (Jc) compared those calcined at 830 °C. The powder calcined at 820 °C and sintered at 850 °C (Bi-2223 820850) showed the best grain morphology and the largest magnetic hysteresis loop and a Jc equal to 12.94 à 105 A/cm2, comparable to the best results found in the literature for Bi-2223. The enhancement in Jc for Bi-2223 820850 seems to be due to improved grain structure rather than creation of effective pinning centers, because the scaling behavior of flux pinning force densities indicates that the main pinning mechanism for all samples is normal point pinning.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 5, 1 April 2018, Pages 5209-5218
Journal: Ceramics International - Volume 44, Issue 5, 1 April 2018, Pages 5209-5218
نویسندگان
Hesam Fallah-Arani, Saeid Baghshahi, Arman Sedghi, Daniela Stornaiuolo, Francesco Tafuri, Davide Massarotti, Nastaran Riahi-Noori,