Switching field distribution of nanoparticles

2019-09-18 06:25:07

The distribution field dependent magnetization

责任者: Klik, I.;Yao, Y.D. 单位: Institute of Physics, Academia Sinica, Taipei 115, Taiwan 来源出处: Journal of Magnetism and Magnetic Materials,2005,290-291 PART 1():464-466 摘要: The stochastic dynamics of an inertial superparamagnetic particle are described here by Browns Langevin equation of motion. Major hysteresis loops are computed using numerical simulations. The resultant switching field distribution is analyzed as a function of temperature, dissipation strength, and period of the driving field. A temperature-dependent scaling law relating the width and the height of the switching field distribution is proposed. © 2004 Elsevier B.V. All rights reserved. 关键词: Nanostructured materials;Superparamagnetism;Heavy ions;Coercive force;Magnetization;Algorithms;Differential equations;Computer simulation;Relaxation-superparamagnetic;Magnetization-time dependent;Thermal relaxation;Box-Mueller algorithms