Disorder induced hysteresis in diluted kinetic Ising model

27th IUPAP Conference on Computational Physics

物理学;计算机科学

Chattopadhyay, Sourav^1 ; Santra, S.B.^1

Department of Physics, Indian Institute of Technology Guwahati, Guwahati

Assam

781039, India^1

关键词: Dynamic order;    Dynamic phase transition;    External fields;    Field strengths;    Kinetic ising model;    Oscillating magnetic fields;    Time dependent;    Two-dimension;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/759/1/012011/pdf
DOI  :  10.1088/1742-6596/759/1/012011

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Dynamic phase transition in diluted kinetic Ising model in two dimensions has been studied in presence of external time dependent oscillating magnetic field applying Glauber Monte Carlo spin flip dynamics. A dynamic phase transition from a dynamically ordered to dynamically disordered ferromagnet is identified studying dynamic order parameter against temperature for different concentrations of disorder. For a given temperature, field strength and frequency for which there was no hysteresis, it is observed that disorder is able induce hysteresis in the system. Effect of increasing concentration of disorder on hysteresis loop area has also been studied for different amplitude and time period of the external field.