کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1595373 | 1515720 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flux-pinning and inhomogeneity in MgB2 /Fe wires
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Flux-pinning and inhomogeneity in MgB2 /Fe wires Flux-pinning and inhomogeneity in MgB2 /Fe wires](/preview/png/1595373.png)
چکیده انگلیسی
Transport critical current densities Jc and irreversibility fields Birr of undoped and nanoparticle doped (10 wt% SiC) Fe-sheathed MgB2 wires were measured from 2 to 40 K in magnetic field Bâ¤16T. For the best segments of wires (â¤1 cm) both the magnitude and field variations of Jc and the pinning force density Fp=JcB depend only on the magnitude of Birr, hence the strength of flux-pinning. Birr of doped wire for Tâ¤30K is â¼1.4 times larger than that of undoped and reaches that of NbTi (10 T at 4.2 K) already at 20 K. Accordingly, its high-field Jcs and Fps are large, typically three times larger than the best literature results, and are limited by the porosity and inhomogeneity of the superconducting cores in present-day MgB2 wires.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 143, Issues 8â9, August 2007, Pages 412-415
Journal: Solid State Communications - Volume 143, Issues 8â9, August 2007, Pages 412-415
نویسندگان
O. Husnjak, E. BabiÄ, I. KuÅ¡eviÄ, X.L. Wang, S. Soltanian, S.X. Dou,