Abstract

Using the method of absorption Mössbauer spectroscopy on ¹¹⁹Sn, ¹²¹Sb, and ¹²⁵Te isotopes, it is demonstrated that the local structure of germanium atoms changes during the crystallization of amorphous Ge₂Sb₂Te₅ films (their tetrahedral symmetry changes to octahedral symmetry). The surrounding of antimony and tellurium atoms does not change, although for antimony atoms, it is similar to that in the Sb₂Te₃ compound. The antistructural defects of tin in the antimony and tellurium nodes of the crystalline films Ge²Sb²Te⁵ are identified by the method of emission Mössbauer spectroscopy on the ^119mSn impurity centers formed after the radioactive decay of the parent atoms ¹¹⁹Sb and ^119mTe.

中文翻译：

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Mössbauer 对非晶态和晶态 Ge2Sb2Te5 薄膜中原子局部周围的研究

摘要

利用穆斯堡尔谱对¹¹⁹ Sn、¹²¹ Sb 和¹²⁵ Te 同位素的吸收，证明了在非晶 Ge ₂ Sb ₂ Te ₅薄膜结晶过程中锗原子的局域结构发生了变化（它们的四面体对称性变为八面体对称性） ）。锑和碲原子的周围没有变化，尽管对于锑原子，它与Sb ₂ Te ₃化合物中的相似。Ge ² Sb ² Te ⁵晶体薄膜的锑和碲节点中锡的抗结构缺陷通过发射穆斯堡尔光谱法对母原子¹¹⁹ Sb 和^{119 m} Te放射性衰变后形成的^{119 m} Sn 杂质中心进行鉴定。