کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8163916 | 1525664 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Superconducting characteristics in purified tantalum-foils
ترجمه فارسی عنوان
ویژگی های ابررسانایی در تانتالیم فویل خالص
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کلمات کلیدی
تانتالیوم فویل، ناهمسانگردی، شار پیوند
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
چکیده انگلیسی
We have conducted extensive investigations on the electrical transport and magnetization on a purified tantalum foil with extremely sharp resistive transition (transition width ÎTcâ¯<â¯0.02â¯K) at 0 T and residual resistivity ratio Ï290K/Ï5K=â¯16.75. Many effects, such as anisotropic field-induced resistive broadening and second peak of the magnetization-hysteresis loop, are observed in the sample. The maximum upper critical field determined by criteria of R/Rnâ¯=â¯0.9 is about 1.08 T rather weak compared to that in cuprate and/or iron-based superconductors. Although the value of upper critical field Hc2(0) and the field dependence of effective pinning energy U show that the flux pinning potential is weaker, the critical current density Jc(2â¯K, 0 T)â¯=â¯1.145â¯Ãâ¯105 A/cm2 and the effect of second peak indicate that there should be higher collective vortex pinning potential in the tantalum foil. The carriers are dominated by holes with the density nâ¯=â¯6.6â¯Ãâ¯1022/cm3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volume 550, 15 July 2018, Pages 85-91
Journal: Physica C: Superconductivity and its Applications - Volume 550, 15 July 2018, Pages 85-91
نویسندگان
Hu Qinghua, Wang Zhihe,