Melikhov, Yevgen  ORCID: https://orcid.org/0000-0002-9787-5238, Hadimani, R. L. and Raghunathan, Arun
2014.
Phenomenological modelling of first order phase transitions in magnetic systems.
Journal of Applied Physics
115
(18)
, 183902.
10.1063/1.4875678
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Abstract
First order phase transitions may occur in several magnetic systems, with two structural phases having different magnetic properties each and a structural transition between them. Here, a novel physics based phenomenological model of such systems is proposed, in which magnetization is represented by the volumetric amounts of ferromagnetism (described by extended Jiles-Atherton theory) and paramagnetism (described by the Curie-Weiss law) in respective phases. An identification procedure to extract material parameters from experimental data is proposed. The proposed phenomenological approach was successfully applied to magnetocaloric Gd5(SixGe1−x)4 system and also has the potential to describe the behavior of Griffiths phase magnetic systems.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Publisher: | American Institute of Physics |
| ISSN: | 0021-8979 |
| Date of First Compliant Deposit: | 12 September 2019 |
| Date of Acceptance: | 29 April 2014 |
| Last Modified: | 06 Jul 2023 18:45 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/93145 |
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