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http://dx.doi.org/10.9714/psac.2015.17.3.001

Superconducting properties of SiC-buffered-MgB2 tapes  

Putri, W.B.K. (Department of Physics, Chungbuk National University)
Kang, B. (Department of Physics, Chungbuk National University)
Duong, P.V. (Department of Physics, Sungkyunkwan University)
Kang, W.N. (Department of Physics, Sungkyunkwan University)
Publication Information
Progress in Superconductivity and Cryogenics / v.17, no.3, 2015 , pp. 1-4 More about this Journal
Abstract
Production of $MgB_2$ film on metallic Hastelloy with SiC as the buffer layer was achieved by means of hybrid physical-chemical vapor deposition technique, whereas SiC buffer layers with varied thickness of 170 and 250 nm were fabricated inside a pulsed laser deposition chamber. Superconducting transition temperature and critical current density were verified by transport and magnetic measurement, respectively. With SiC buffer layer, the reduced delaminated area at the interface of $MgB_2$-Hastelloy and the slightly increased $T_c$ of $MgB_2$ tapes were clearly noticed. It was found that the upper critical field, the irreversibility field and the critical current density were reduced when $MgB_2$ tapes were buffered with SiC buffer layer. Clarifying the mechanism of SiC buffer layer in $MgB_2$ tape in affecting the superconducting properties is considerably important for practical applications.
Keywords
$MgB_2$ tapes; $H_{c2}$; $H_{irr}$; SiC buffer layers; Hastelloy;
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