Low-field magnetocaloric effect in Nd2Ni2ln intermetallic compound / Efeito magnetocalórico de baixo campo no composto intermetálico Nd2Ni2ln
In this work, we consider a model which describes the CEF and magnetic interaction applied to two sublattices, where the magnetic interaction is described by a Hamiltonian who considers the Zeeman and exchange interactions in the molecular field approximation. The isothermal magnetic entropy change...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | Brasil |
| Institución: | Instituto Superior de Educação Vera Cruz (VeraCruz) |
| Repositorio: | Revista Veras |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs2.ojs.brazilianjournals.com.br:article/40679 |
| Acceso en línea: | https://ojs.brazilianjournals.com.br/ojs/index.php/BRJD/article/view/40679 |
| Access Level: | acceso abierto |
| Palabra clave: | Magnetocaloric Antiferromagnetic ordering intermetallics |
| Sumario: | In this work, we consider a model which describes the CEF and magnetic interaction applied to two sublattices, where the magnetic interaction is described by a Hamiltonian who considers the Zeeman and exchange interactions in the molecular field approximation. The isothermal magnetic entropy change ΔS as a function of temperature was computationally obtained in the [001] crystallographic direction, from the equation of state of magnetization M(H, T) and entropy S (H, T) by diagonalization of the total Hamiltonian (HTot). We obtained a good agreement between the theory and the experiment was using the estimated crystal-field parameters and the exchange integral for Nd2Ni2In. |
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