Investigation of oscillation frequency and disorder induced dynamic phase transitions in a quenched-bond diluted Ising ferromagnet

TL;DR

This study explores how quenched bond dilution affects the dynamic phase transitions and hysteresis properties in a kinetic Ising model, revealing frequency-dependent behaviors and the impact of disorder.

Contribution

It introduces a detailed analysis of frequency-dependent hysteresis and phase transitions in a quenched-bond diluted Ising ferromagnet using effective-field theory.

Findings

Hysteresis loop area, remanence, and coercivity depend strongly on bond disorder and oscillation frequency.

Hysteresis curve shapes vary significantly with Hamiltonian parameters.

Results show good qualitative agreement with recent studies.

Abstract

Frequency evolutions of hysteresis loop area and hysteresis tools such as remanence and coercivity of a kinetic Ising model in the presence of quenched bond dilution are investigated in detail. The kinetic equation describing the time dependence of the magnetization is derived by means of effective-field theory with single-site correlations. It is found that the frequency dispersions of hysteresis loop area, remanence and coercivity strongly depend on the quenched bond randomness, as well as applied field amplitude and oscillation frequency. In addition, the shape of the hysteresis curves for a wide variety of Hamiltonian parameters is studied and some interesting behaviors are found. Finally, a comparison of our observations with those of recently published studies is represented and it is shown that there exists a qualitatively good agreement.