Abstract

ANDRADE, E et al. Characterization of Superconducting Magnesium-Diboride Films on Glassy Carbon and Sapphire Substrates. Rev. mex. fis. [online]. 2008, vol.54, suppl.1, pp.1-4. ISSN 0035-001X.

IBA methods were applied to measure elemental depth profiles of precursors and superconducting MgB₂ thin films deposited on glassy carbon (Good Fellows) and sapphire (Al2O3) substrates. For each type of substrates we obtained a pair of samples i.e. one amorphous precursor and one superconducting film which were then characterized. A ³He⁺ beam was used to bombard both, precursors and superconducting films in order to obtain the samples elemental composition profiles. The zero resistance T_coand the middle of transition T_cm values were 26.0K and 29.7K for the MgB₂ film deposited on glassy carbon substrate. In the case of sapphire substrate the T_co and T_cm values were 25.0K and 27.9K, respectively.

Keywords : Superconducting MgB₂ films; IBA methods; RBS/NRA analyses.

        · abstract in Spanish     · text in English     · English ( pdf )