Abstract
In the paper the Blume–Emery–Griffiths model is studied for a magnetic bilayer with coordination number z=5. The Cluster Variational Method in Pair Approximation is employed. A special emphasis is put on the magnetic and magnetocaloric properties in the cases of the 1st order phase transitions. For such cases the magnetization, quadrupolar moment and magnetic entropy, as well as the isothermal entropy change and the adiabatic temperature change during demagnetization process are calculated. It is shown that in the vicinity of the temperature corresponding to the 1st order phase transitions the adiabatic demagnetization is not possible. Instead, the demagnetization process with the smallest entropy production is proposed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
