Abstract

The absorption Mössbauer spectroscopy on ¹¹⁹Sn impurity centers shows that germanium atoms in the structure of amorphous and polycrystalline Ge₂Sb₂Te₅ films have different local symmetries (tetrahedral in the amorphous phase and octahedral in the crystalline). By emission Mössbauer spectroscopy on ^119mSn impurity centers formed after the radioactive decay of ¹¹⁹Sb or ^119mTe parent atoms, tin antisite defects at antimony and tellurium sites of crystalline Ge₂Sb₂Te₅ films are identified.

中文翻译：

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非晶和结晶Ge 2 Sb 2 Te 5薄膜中锡的局部结构和抗结构缺陷

摘要

在¹¹⁹ Sn杂质中心的吸收Mössbauer光谱表明，非晶和多晶Ge ₂ Sb ₂ Te ₅薄膜结构中的锗原子具有不同的局部对称性（非晶相中的四面体和晶体中的八面体）。通过对¹¹⁹ Sb或^{119 m} Te母原子的放射性衰变后形成的^{119 m} Sn杂质中心进行发射Mössbauer光谱分析，鉴定出晶体Ge ₂ Sb ₂ Te ₅膜的锑和碲位点处的锡反位缺陷。