Differential scanning calorimetric studies of several compounds showing order-disorder transition |
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Authors: | B P Ghosh K Nag |
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Institution: | (1) Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 700 032 Calcutta, India |
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Abstract: | Differential scanning calorimetric measurements have been carried out for Cul, CuBr, Agl, Ag2S, NaNO2, NaNO3 and KSCN. First-order phase transformations occur with the compounds Cul, CuBr, Agl and Ag2S; NaNO2, NaNO3 and KSCN exhibit -type transformations. The enthalpy changes due to phase transitions have been determined. Thermal hysteresis exhibited by these compounds have been examined in the light of their change in unit cell volumes.
Zusammenfassung Es wurden DSC-Untersuchungen von Cul, CuBr, Agl, Ag2S, NaNO2, NaNO3 und KSCN ausgeführt. Phasenübergänge erster Ordnung verlaufen bei den Verbindungen Cul, CuBr, Agl und Ag2S, während NaNO2, NaNO3 und KSCN Übergänge des -Typs zeigen. Die Phasenübergängen zuzuschreibenden Enthalpieveränderungen wurden bestimmt. Die bei diesen Verbindungen auftretende thermische Hysterese wurde im Zusammenhang mit den Veränderungen des Elementarzellenvolumens untersucht.
![Rcy](/content/v7205065h23t847t/xxlarge1056.gif) ![iecy](/content/v7205065h23t847t/xxlarge1077.gif) ![zcy](/content/v7205065h23t847t/xxlarge1079.gif) ![yucy](/content/v7205065h23t847t/xxlarge1102.gif) ![mcy](/content/v7205065h23t847t/xxlarge1084.gif) ![Pcy](/content/v7205065h23t847t/xxlarge1055.gif) ![rcy](/content/v7205065h23t847t/xxlarge1088.gif) ![ocy](/content/v7205065h23t847t/xxlarge1086.gif) ![vcy](/content/v7205065h23t847t/xxlarge1074.gif) ![iecy](/content/v7205065h23t847t/xxlarge1077.gif) ![dcy](/content/v7205065h23t847t/xxlarge1076.gif) ![iecy](/content/v7205065h23t847t/xxlarge1077.gif) ![ncy](/content/v7205065h23t847t/xxlarge1085.gif) ![Dcy](/content/v7205065h23t847t/xxlarge1044.gif) ![Scy](/content/v7205065h23t847t/xxlarge1057.gif) -![icy](/content/v7205065h23t847t/xxlarge1080.gif) ![scy](/content/v7205065h23t847t/xxlarge1089.gif) ![scy](/content/v7205065h23t847t/xxlarge1089.gif) ![lcy](/content/v7205065h23t847t/xxlarge1083.gif) ![iecy](/content/v7205065h23t847t/xxlarge1077.gif) ![ocy](/content/v7205065h23t847t/xxlarge1086.gif) ![vcy](/content/v7205065h23t847t/xxlarge1074.gif) ![acy](/content/v7205065h23t847t/xxlarge1072.gif) ![ncy](/content/v7205065h23t847t/xxlarge1085.gif) ![icy](/content/v7205065h23t847t/xxlarge1080.gif) ![scy](/content/v7205065h23t847t/xxlarge1089.gif) ![ocy](/content/v7205065h23t847t/xxlarge1086.gif) ![iecy](/content/v7205065h23t847t/xxlarge1077.gif) ![dcy](/content/v7205065h23t847t/xxlarge1076.gif) ![icy](/content/v7205065h23t847t/xxlarge1080.gif) ![ncy](/content/v7205065h23t847t/xxlarge1085.gif) ![iecy](/content/v7205065h23t847t/xxlarge1077.gif) ![ncy](/content/v7205065h23t847t/xxlarge1085.gif) ![icy](/content/v7205065h23t847t/xxlarge1080.gif) Cul, CuBr, Agl, Ag2S, NaNO2, NaNO3 KSCN. ![Ucy](/content/v7205065h23t847t/xxlarge1059.gif) ![scy](/content/v7205065h23t847t/xxlarge1089.gif) ![tcy](/content/v7205065h23t847t/xxlarge1090.gif) ![acy](/content/v7205065h23t847t/xxlarge1072.gif) 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