| Инд. авторы: | Drebushchak V.A., Palyanova G.A., Seryotkin Y.V., Drebushchak T.N. |
| Заглавие: | Probable metal-insulator transition in Ag4SSe |
| Библ. ссылка: | Drebushchak V.A., Palyanova G.A., Seryotkin Y.V., Drebushchak T.N. Probable metal-insulator transition in Ag4SSe // Journal of Alloys and Compounds. - 2015. - Vol.622. - P.236-242. - ISSN 0925-8388. - EISSN 1873-4669. |
| Внешние системы: | DOI: 10.1016/j.jallcom.2014.10.065; SCOPUS: 2-s2.0-84908432146; WoS: 000345749500037; |
| Реферат: | eng: New phase transition (285 K) in low-temperature monoclinic Ag4SSe was found out below the alpha-beta transition (358 K) after the measurements with differential scanning calorimetry. The transition reveals significant hysteresis (over 30 K). X-ray powder diffraction shows that the superlattice with doubled a and b parameters of the unit cell exists below the new transition point. The signs of this new phase transition can be found in thermal and electrical conductivity of Ag4SSe published in literature. Elusive phase transition in Ag2Se shows similar properties. The new transition is likely related to the metal-insulator type transition, like K3Cu8S6. (C) 2014 Elsevier B.V. All rights reserved.
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| Ключевые слова: | COEFFICIENT; AG2SE; ENERGY-GAP; HEAT-CAPACITY; SOLID-SOLUTIONS; THIN-FILMS; SYSTEM AG2S-AG2SE; RESISTIVITY; PHASE-EQUILIBRIA; X-ray diffraction; Calorimetry; Superlattice; Metal-insulator transition; DSC; Ag4SSe; THERMODYNAMIC PROPERTIES; |
| Издано: | 2015 |
| Физ. характеристика: | с.236-242 |