Maxwell Relations for Substances with Negative Thermal Expansion and Negative Compressibility
Igor A. Stepanov *
Institute of Science and Innovative Technologies, Liepaja University, Liela 14, Liepaja, LV3401, Latvia
*Author to whom correspondence should be addressed.
Abstract
It is shown that taking into account the negative compressibility of substances changes Maxwell relations. The earlier results of the author indicating that these relations differ for substances with negative thermal expansion have received additional confirmation. Universal Maxwell relations have been derived. The results obtained have been confirmed experimentally by a number of authors.
Keywords: Maxwell relations, thermodynamics, negative thermal expansion, negative compressibility, heat exchange, compression