High-field specific heat and entropy obtained from adiabatic temperature change

Specific heat and entropy are relevant thermodynamic properties, which may be used as macroscopic probes to microscopic properties of materials under ambient conditions and under high applied fields. However, the measurement of specific heat under intense external fields can be a challenging task, a...

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Bibliographic Details
Published in:arXiv.org 2021-04
Main Authors: Paixão, L S, Usuda, E O, Imamura, W, Carvalho, A M G
Format: Article
Language:English
Subjects:
Adiabatic flow
Electric fields
Entropy
Heat
Material properties
Specific heat
Thermodynamic properties
Online Access:Get full text
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Summary:Specific heat and entropy are relevant thermodynamic properties, which may be used as macroscopic probes to microscopic properties of materials under ambient conditions and under high applied fields. However, the measurement of specific heat under intense external fields can be a challenging task, as well as to obtain the entropy in the same conditions. Here, we describe a method to obtain high-field specific heat and entropy from measurements of specific heat under ambient conditions and direct temperature change induced by adiabatic field changes. We derive straightforward thermodynamic equations to calculate the specific heat and entropy and our results agree satisfactorily with experimental data of specific heat under magnetic field, electric field, and pressure.
ISSN:2331-8422
DOI:10.48550/arxiv.2104.12590