کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819989 | 1525765 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Self-field redistributions and strain effects observed by magneto-optical imaging in Bi2212 multifilaments
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Magneto-optical (MO) imaging was used to study and characterize superconducting Bi2212 multifilaments melted in a 5Â T magnetic field. MO investigations were performed in presence of a transport current, with and without the superposition of an external magnetic field (30Â mT). Transport current redistributions via the Ag cladding have been observed in MO self-field experiments for the first time in Bi2212 multifilaments. MO in situ investigations under tensile stress reveal a slow progression of the cracks, that do not cross the entire section of the multifilamentary tape. This crack formation is correlated with the transport critical current versus strain curves: the critical current drop under tensile stress is relatively smooth for Bi2212 multifilaments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 469, Issues 2â3, 1 February 2009, Pages 120-125
Journal: Physica C: Superconductivity - Volume 469, Issues 2â3, 1 February 2009, Pages 120-125
نویسندگان
A. Villaume, A. Antonevici, D. Bourgault, L. Porcar,