Hysteretic response characteristics and dynamic phase transition via site dilution in the kinetic Ising model

TL;DR

This paper investigates how site dilution affects the hysteretic response and dynamic phase transition in the kinetic Ising model, analyzing frequency, amplitude, and disorder effects using effective field theory.

Contribution

It introduces a detailed analysis of hysteresis decay and phase transition characteristics in a site diluted kinetic Ising model, highlighting new dispersion curve types.

Findings

Identification of three to four types of dispersion curves.

Dependence of hysteresis loop area on frequency, amplitude, and site concentration.

Relation between microscopic relaxation time and external field period.

Abstract

The decay of the hysteresis loop area of the system, which is obeying a site diluted kinetic Ising model, is considered by the disorder parameter using the effective field theory analysis. The exhibition focuses on the understanding of external field frequency, amplitude and the site concentration dependency of the hysteresis loop area for several powerful treatments. Important characteristics of the hysteretic response, such as frequency dispersion, effect of domain nucleation phenomenon on the dynamic process etc. has been introduced together with well known other characteristics. An attempt has been made to explain the relations between the competing time scales (intrinsic microscopic relaxation time of the system and the time period of the external oscillatory field) and the shape of the response. As a result of the detailed investigations, existence of essentially three, particularly four types of dispersion curves have been propounded.