Properties of MgB2/In composite thick films on ceramic substrates prepared by a screen printing method

In-free and In-added MgB2 thick films were prepared on ceramic substrates (MgO, YSZ, SrTiO3 and Al2O3) using a simple screen printing method. For In-free films, the adhesion between the films and the substrates were very weak; about 10-40% of these films peeled off after firing. We examined the temp...

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Bibliographic Details
Published in:Journal of alloys and compounds 2008-03, Vol.452 (2), p.401-405
Main Authors: SAKAGUCHI, Ryoji, IKEBE, Yumiko, BAN, Eriko, MATSUOKA, Yoshiharu
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Critical currents
Exact sciences and technology
Granular, melt-textured, amorphous and composite superconductors
Inhomogeneous superconductors and superconducting systems
Physics
Properties of type I and type II superconductors
Superconductivity
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Summary:In-free and In-added MgB2 thick films were prepared on ceramic substrates (MgO, YSZ, SrTiO3 and Al2O3) using a simple screen printing method. For In-free films, the adhesion between the films and the substrates were very weak; about 10-40% of these films peeled off after firing. We examined the temperature dependence of the resistivity using the non-separated films. These films showed metallic behavior from room temperature to Tc(onset)=39.7K and attained zero resistivity at Tc(endpoint)=34.0-37.7K, depending on the kinds of substrate. For In-added films formed on MgO, almost all films adhere well to the substrates and the transport Jc (4.2K, 0T) were also improved remarkably; 70Acm-2 for In-free film and 1.6X103Acm-2 for 18vol.% In film.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2006.11.047