Local Structure and Anti-Structural Defects of Tin in Amorphous and Crystalline Ge.sub.2Sb.sub.2Te.sub.5 Films

Local Structure and Anti-Structural Defects of Tin in Amorphous and Crystalline Ge.sub.2Sb.sub.2Te.sub.5 Films

The absorption Mössbauer spectroscopy on .sup.119Sn impurity centers shows that germanium atoms in the structure of amorphous and polycrystalline Ge.sub.2Sb.sub.2Te.sub.5 films have different local symmetries (tetrahedral in the amorphous phase and octahedral in the crystalline). By emission Mössbau...

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Veröffentlicht in:Semiconductors (Woodbury, N.Y.) N.Y.), 2021-02, Vol.55 (1), p.1
Hauptverfasser: Marchenko, A. V, Terukov, E. I, Nasredinov, F. S, Petrushin, Yu. A, Seregin, P. P
Format: Artikel
Sprache:eng
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Zusammenfassung:The absorption Mössbauer spectroscopy on .sup.119Sn impurity centers shows that germanium atoms in the structure of amorphous and polycrystalline Ge.sub.2Sb.sub.2Te.sub.5 films have different local symmetries (tetrahedral in the amorphous phase and octahedral in the crystalline). By emission Mössbauer spectroscopy on .sup.119mSn impurity centers formed after the radioactive decay of .sup.119Sb or .sup.119mTe parent atoms, tin antisite defects at antimony and tellurium sites of crystalline Ge.sub.2Sb.sub.2Te.sub.5 films are identified.
ISSN:1063-7826
DOI:10.1134/S1063782621010127