کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819048 | 1525758 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancement of activation energy in nano diamond doped MgB2 superconductor
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Temperature dependence behavior of resistivity for nano diamond doped MgB2 superconductor was measured in different magnetic field 0 T ⩽ H ⩽ 8 T. Irreversibility (Hirr) is enhanced by nano diamond doping. We reveal that flux-creep activation energy is a nonlinear function of current density U0âJc-0.2. In order to determine the activation energy of thermally activated flux flow, Arrhenius law has been taken into account. The magnetic field dependence of flux flow activation energy of nano diamond doped MgB2 superconductors was calculated from the slope of the linear part of the Arrhenius plot and found to be decrease corresponding with applied field. Therefore, the critical current density of this sample will need to be enhanced for practical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 470, Issues 7â8, 1 April 2010, Pages 369-372
Journal: Physica C: Superconductivity - Volume 470, Issues 7â8, 1 April 2010, Pages 369-372
نویسندگان
Intikhab A. Ansari, M. Shahabuddin, Nasser Saleh Alzayed, Arpita Vajpayee, V.P.S. Awana, H. Kishan,