Author | Kartashev, A. V. | |
Author | Gorev, M. V. | |
Author | Bogdanov, E. V. | |
Author | Flerov, I. N. | |
Author | Laptash, N. M. | |
Accessioned Date | 2017-06-16T10:30:31Z | |
Available Date | 2017-06-16T10:30:31Z | |
Issued Date | 2016-02 | |
Bibliographic Citation | Kartashev, A. V. Thermal propertiesandphasetransitioninthe fluoride, (NH4)3SnF7 [Текст] / A. V. Kartashev, M. V. Gorev, E. V. Bogdanov, I. N. Flerov, N. M. Laptash // Journal of Solid State Chemistry. — 2016. — Т. 237. — С. 269-273 | |
ISSN | 00224596 | |
URI (for links/citations) | https://elib.sfu-kras.ru/handle/2311/33174 | |
Description | Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала. | |
Abstract | Calorimetric, dilatometric and differential thermal analysis studies were performed on (NH4)3SnF7 for a wide range of temperatures and pressures. Large entropy (δS0 = 22 J/mol•K) and elastic deformation (δ(ΔV/V) 0 = 0.89%) jumps have proven that the Pa-3 ↔ Pm-3m phase transition is a strong first order structural transformation. A total entropy change of ΔS0 = 32.5 J/mol•K agrees well with the model associated with the complete ordering of structural units in the Pa-3 phase, which are disordered in the Pm-3m phase, and is equal to the sum of entropy changes in the related material, (NH4)3TiF7, undergoing transformation between the two cubic phases through the intermediate phases. Hydrostatic pressure decreases the stability of the high temperature Pm-3m phase in (NH4)3SnF7, contrary to (NH4)3TiF7, characterised by a negative baric coefficient. The effect of experimental conditions on the chemical stability of (NH4)3SnF7 was observed. | |
Link to Another Site | http://www.sciencedirect.com/science/article/pii/S0022459616300512 | |
Subject | Phase transition | |
Subject | Fluorides | |
Subject | Heat capacity | |
Subject | Entropy | |
Subject | Thermal expansion | |
Subject | High pressure | |
Title | Thermal propertiesandphasetransitioninthe fluoride, (NH4)3SnF7 | |
Type | Journal Article | |
Type | Published Journal Article | |
Pages | 269-273 | |
GRNTI | 29.19.15 | |
Update Date | 2017-06-16T10:30:31Z | |
DOI | 10.1016/j.jssc.2016.02.027 | |
Institute | Институт инженерной физики и радиоэлектроники | |
Department | Кафедра теплофизики | |
Journal Name | Journal of Solid State Chemistry | |
Journal Quartile in Scopus | Q1 | |
Journal Quartile in Web of Science | Q2 | |