Study of hysteresis and chaotic dynamics in bulk ferromagnet

Publication Issue: 
Volume 30, Number 1-4, 2009
Page No: 
Date Received: 
Tuesday, June 30, 2009
Authors' Name: 
Pek-Lan Toh
Siew-Choo Lim
Authors' Affiliation and Address: 
School of Physics, Universiti Sains Malaysia, 11800 USM, Pulau Pinang.

In this paper, we studied phenomenologically and numerically the ferromagnetic phase
transition and dynamic responses of bulk ferromagnet. We used Landau free energy density
expansion and applied the calculus of variations to formulate the second order
ferromagnetic phase transition. Then these are combined with Landau-Lifshitz (LL)
equation of motion in the study of chaotic dynamics of the bulk ferromagnet. The results
are presented graphically by using several different applied fields and frequencies.

PDF icon [019-027]-pltoh.pdf346.83 KB