CONTRIBUCIÓN DE LOS MAGNONES A LAS PROPIEDADES TERMICAS DE LOS BOROCARBETOS
Using a phenomenological spin hamiltonian we calculate magnetic and thennal properties in the antíferromagnetic phase which is present in a series ofborocarbides RNí2B2C (R = Gd, Ho): the :frequency co(k) and density of states of the spin wave excitations the specific heat cv(T, H) and the mean :fie...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2005 |
| País: | Perú |
| Institución: | Universidad Nacional Mayor de San Marcos |
| Repositorio: | Revistas - Universidad Nacional Mayor de San Marcos |
| Idioma: | español |
| OAI Identifier: | oai:revistasinvestigacion.unmsm.edu.pe:article/8835 |
| Acceso en línea: | https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/8835 |
| Access Level: | acceso abierto |
| Palabra clave: | Magnons Thennal Propierties Magnones Propiedades Ténnicas |
| Sumario: | Using a phenomenological spin hamiltonian we calculate magnetic and thennal properties in the antíferromagnetic phase which is present in a series ofborocarbides RNí2B2C (R = Gd, Ho): the :frequency co(k) and density of states of the spin wave excitations the specific heat cv(T, H) and the mean :field Néel temperature . TN. The model has three parameters: J¡, J2 and Ha, the ferromagnetic (FM) in-plane exchange interactiot1 between first neighbors, the inter-plane antiferromagnetic (AF) exchange interaction and the anísotropic (magnetic) field. Our numerical and analitical are results ingood agreement with, respectivaly, experiments. |
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