Crystal Structure and Phase Transitions of Ternary Compounds in the Thulium-Silver-Tin Systemстатья
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Дата последнего поиска статьи во внешних источниках: 18 ноября 2015 г.
Авторы:
Elnyakov D.D. ,
Kalmykov K.B. ,
Pokholok K.V. ,
Dunaev S.F.
Журнал:
Russian Journal of Inorganic Chemistry
Том:
60
Номер:
10
Год издания:
2015
Издательство:
Maik Nauka/Interperiodica Publishing
Местоположение издательства:
Russian Federation
Первая страница:
1173
Последняя страница:
1178
DOI:
10.1134/S003602361510006X
Аннотация:
The existence of the TmAgSn compound in the Tm–Ag–Sn system in the form of two polymorphs was confirmed. The high-temperature phase crystallizes with the LiGaGe type (P63mc, Z = 2), and the lowtemperature one with the ZrNiAl type (P6¯¯¯2m, Z = 3). A new ternary compound TmAgSn2 was found to exist (Cu3Au type, Pm3¯¯¯m
, Z = 1). The polymorphic transition temperature of the TmAgSn was found to be 1214 K using differential thermal analysis. A comparative investigation of the compounds by 119Sn Mössbauer spectroscopy showed a difference in the chemical bonding character of tin atoms: in TmAgSn2, tin has a typical valence state for metallic systems, whereas in both TmAgSn polymorphs additional interaction between the 5s orbitals of silver atoms and the 5p orbitals of tin atoms takes place.
Original Russian Text © D.D. Elnyakov, K.B. Kalmykov, K.V. Pokholok, S.F. Dunaev, 2015, published in Zhurnal Neorganicheskoi Khimii, 2015, Vol. 60, No. 10, pp. 1287–1294
The article was translated by the authors.
Добавил в систему:
Ельняков Дмитрий Дмитриевич