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High‐temperature specific heat of AgInS 2 and AgGaSe 2
Author(s) -
Neumann H.,
Kühn G.,
Möller W.
Publication year - 1985
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170200919
Subject(s) - specific heat , thermodynamics , anharmonicity , atmospheric temperature range , thermal expansion , constant (computer programming) , heat capacity , chemistry , thermal , volumetric heat capacity , polynomial , materials science , heat transfer coefficient , condensed matter physics , heat transfer , physics , mathematics , mathematical analysis , computer science , programming language
The molar specific heat at constant pressure was measured for AgInS 2 and AgGaSe 2 in the temperature range from 300 to 500 K. An analysis of the experimental data showed that the contribution to the specific heat due to lattice anharmonicity can be described by a polynomial of third order in the temperature. This result is in agreement with the temperature dependence of the specific heat expected from thermal expansion data.