Published July 2000 | Version v1
Journal article Metadata-only

Effect of gamma irradiation on the heat capacity of (CH3)2NH2Ga(SO4)2·6H2O crystals in the temperature range of phase transitions

Creators

  • 1. Inst. Fiziki Tverdogo Tela i Poluprovodnikov Natsional'noj Akademii Belorussii, Minsk (Belarus)

Description

The heat capacity of the dimethylammoniumgalliumsulfate crystal (DMAGS) is measured within the temperature range of 80-300 K and the effect of γ-irradiation on the heat capacity in the area of the phase transition (PT) is studied. It is shown that the PT at T1 = 135 K in the DMAGS crystal is related to the second type and the PT at T2 = 119 K - to the first type. It is established that the temperature area of the ferrophase existence in the DMAGS crystal is narrowed under the γ-irradiation effect. The changes in the thermodynamic functions of the studied transitions are determined

Abstract (Russian)

Измерена теплоемкость кристаллов диметиламмонийгаллийсульфата (ДМАГС) в интервале температур 80-300 К и исследовано влияние γ-облучения на теплоемкость в области фазового перехода (ФП). Подтверждено, что ФП при T1 135 K в кристалле ДМАГС относится ко второму роду, ФП при T2 = 119 K - к первому роду. Установлено, что температурная область сушествования сегнетофазы в кристалле ДМАГС под действием γ-облучения сужается. Определены изменения термодинамических функций исследованных переходов

Additional details

Additional titles

Original title (Russian)
Влияние γ-облучения на теплоемкост' кристаллов (CH

Publishing Information

Journal Title
Neorganicheskie Materialy
Journal Volume
36
Journal Issue
7
Journal Page Range
p. 888-891
ISSN
0002-337X
CODEN
NEOMB8

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
32007727
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
AMMONIUM COMPOUNDS; CRYSTAL STRUCTURE; FERROELECTRIC MATERIALS; GALLIUM SULFIDES; GAMMA RADIATION; HYDRATES; HYDROCARBONS; PHASE TRANSFORMATIONS; PHYSICAL RADIATION EFFECTS; RADIATION DOSES; SPECIFIC HEAT; TEMPERATURE RANGE 0065-0273 K; THERMODYNAMIC PROPERTIES
Descriptors DEC
CHALCOGENIDES; DIELECTRIC MATERIALS; DOSES; ELECTROMAGNETIC RADIATION; GALLIUM COMPOUNDS; IONIZING RADIATIONS; MATERIALS; ORGANIC COMPOUNDS; PHYSICAL PROPERTIES; RADIATION EFFECTS; RADIATIONS; SULFIDES; SULFUR COMPOUNDS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES

Optional Information

Notes
6 refs., 3 figs., 1 tab.