Polarized XAFS study of Mg K-edge for MgB sub(2 on ZnO)

Polarization-dependent Mg K-edge XAFS study was carried out for MgB sub(2 films epitaxially deposited by MBE method on ZnO single crystal. 50 and 150 nm MgB) sub(2) films were deposited on the O-plane side of the ZnO single crystal. The investigation for the O-plane side of ZnO is interesting becaus...

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Bibliographic Details
Published in:Journal of electron spectroscopy and related phenomena 2011-04, Vol.184 (3-6), p.254-256
Main Authors: Miyanaga, Takafumi, Kanno, Tomoe, Fujine, Yosuke, Araaki, Jun, Yoshizawa, Masahito
Format: Article
Language:eng ; fre ; ger
Subjects:
Borides
Deposition
Magnesium
Magnesium compounds
Molecular beam epitaxy
Single crystals
Zinc oxide
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Summary:Polarization-dependent Mg K-edge XAFS study was carried out for MgB sub(2 films epitaxially deposited by MBE method on ZnO single crystal. 50 and 150 nm MgB) sub(2) films were deposited on the O-plane side of the ZnO single crystal. The investigation for the O-plane side of ZnO is interesting because the local structure of MgB sub(2 should be affected by Mg-O interaction on the ZnO. The results indicate that the structure of 50 nm MgB) sub(2) film was expanded in the a-b plane and compressed along the c-axis, but that of 150 nm MgB sub(2 was relaxed on the ZnO surface and should be close to the MgB) sub(2) crystalline phase. In this study we showed the result polarization-dependent Mg K-edge XAFS for MgB sub(2 superconducting films. [inline image] 50 and 150 nm MgB) sub(2) films were deposited by MEB method on ZnO single crystal. [inline image] 50 nm MgB sub(2 film was expanded in the a-b plane and compressed along the c-axis, but the 150 nm MgB) sub(2) was relaxed. [inline image] The present results suggest that the reactive region by Mg and O atoms exist between MgB sub(2 film and ZnO.)
ISSN:0368-2048
DOI:10.1016/j.elspec.2010.10.008