https://doi.org/10.1140/epjp/s13360-021-01538-1
Regular Article
High-field specific heat and entropy obtained from adiabatic temperature change
1
Instituto de Física “Gleb Wataghin”, Universidade Estadual de Campinas, 13083-859, Campinas, SP, Brazil
2
Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, 09972-270, Diadema, SP, Brazil
3
Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, 13083-860, Campinas, SP, Brazil
4
Departamento de Engenharia Mecânica, Universidade Estadual de Maringá, 87020-900, Maringá, PR, Brazil
5
Departamento de Engenharia Química, Universidade Federal de São Paulo, 09913-030, Diadema, SP, Brazil
Received:
1
October
2020
Accepted:
5
May
2021
Published online:
17
May
2021
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.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
