A Semi-graphical Analysis on the Sublattice Anisotropy of a Two Sublattice System with Uniaxial Anisotropy: Application to Pr2Fe14B

  • Kim, Y.B. (Korea Research Institute of Standards and Science) ;
  • Jin-Han-Min (Department of Physics, Jilin University)
  • Published : 1998.09.01

Abstract

A method to analyze the anisotropy constants of a two sublattice system with uniaxial anisotropy has been investigated by extending the Sucksmith and Thompson's method to higher order anisotropy terms. Using the method, a set of anisotropy constants for Pr-sublattice of $Pr_2Fe_{14}B at 4.2K has been obtained as K_{1Pr}=5210 J/kg, K_{2Pr}=-7200 J/kg, K_{3Pr}=-770 J/kg, K_{4Pr}=4940 J/kg and K_{SPr}=700 J/kg for N_{PrFe}=2.2 T/Am^2kg^{-1}.$ The magnetization calculated by an energy minimum method by using the sublattice anisotropy constants well reproduced the experimental results and satisfied the simulation assumptions.

Keywords

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