Superconductivity in Magnesium Diboride Thin Films
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Date
2002-04
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Abstract
Mg–B thin films were grown in situ on (1 0 0) SrTiO3 substrates by pulsed laser deposition. Targets pressed from a commercial MgB2 powder had a superconducting transition temperature of 37 K. Films were characterized by atomic force microscopy and susceptibility measurements. First samples showed superconducting onset at 30 K and became superconducting at about 20 K. Films were patterned into microbridges 4–100 μm wide by Ar ion beam milling. Films had large contact resistances, of the order of 500 Ω cm2 in the temperature range 4.2–300 K.
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Full text can be accessed at
http://www.sciencedirect.com/science/article/pii/S0921453402009917
Keywords
Magnesium diboride, Thin films, In situ, Superconductivity
Citation
Ivanov, Z., Malisa, A., Johansson, L.G. and Komissinski, P.V., 2002. Superconductivity in magnesium diboride thin films. Physica C: Superconductivity, 372, pp.1274-1276.