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 SM ISO690:2012KOCH, Thomas, ZDRAVKOV, I., SURDU, Andrei, KONDRYA, Elena, SOCROVIŞCIUC, Alexei, ROSSOLENKO, A, RYAZANOV, Valeriy, STRAUMAL, B, TIDECKS, Reinhard, WIXFORTH, Achim, SIDORENKO, Anatolie. Influence of strong disorder on superconductivity of MgB2 thin films. In: Moldavian Journal of the Physical Sciences, 2008, nr. 2(7), pp. 164-167. ISSN 1810-648X. |
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| Moldavian Journal of the Physical Sciences | |
| Numărul 2(7) / 2008 / ISSN 1810-648X /ISSNe 2537-6365 | |
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| Pag. 164-167 | |
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We investigated the influence of disorder on superconductivity of MgB2 films, prepared
in a single deposition run onto two different substrates: (100)-MgO and on (128° rot)-LiNbO3
with trigonal crystal structure which does not match to the MgB2 structure. As expected, the
microstructure of both films crucially differs. The REM study shows a very homogeneous,
smooth morphology of the MgB2 film on MgO, but a very rough inhomogeneous film structure on LiNbO3. Although the MgB2 film on LiNbO3 is strongly disordered, its critical temperature Tc=33.5 K is practically the same as for the film deposited on MgO. Possible reasons
of such unusual Tc behavior are discussed. |
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