CONTRIBUCIÓN DE LOS MAGNONES A LAS PROPIEDADES TERMICAS DE LOS BOROCARBETOS

Authors

  • J. Vento F. Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Físicas
  • C. Aguirre C. Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Físicas
  • A. Guillen G. Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Físicas
  • A. Díaz S. Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Físicas
  • B. Míramira T. Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Físicas

DOI:

https://doi.org/10.15381/rif.v8i01.8835

Keywords:

Magnons, Thennal Propierties

Abstract

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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Published

2005-07-15

Issue

Vol. 8 No. 01 (2005)

Section

Article

License

Copyright (c) 2005 J. Vento F., C. Aguirre C., A. Guillen G., A. Díaz S., B. Míramira T.

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How to Cite

CONTRIBUCIÓN DE LOS MAGNONES A LAS PROPIEDADES TERMICAS DE LOS BOROCARBETOS. (2005). Revista De Investigación De Física, 8(01), 16-20. https://doi.org/10.15381/rif.v8i01.8835