Inertial magnetization dynamics of ferromagnetic nanoparticles including thermal agitation

2021 ◽  
Author(s):  
Sergei V. Titov ◽  
William Coffey ◽  
William J. Dowling ◽  
Yuri Kalmykov ◽  
Marios Zarifakis ◽  
...  
Keyword(s):  
Ferromagnetic Nanoparticles ◽  
Magnetization Dynamics ◽  
Thermal Agitation

Inertial magnetization dynamics of ferromagnetic nanoparticles including thermal agitation

2021 ◽  
Vol 103 (14) ◽  
Author(s):  
S. V. Titov ◽  
W. T. Coffey ◽  
Yu. P. Kalmykov ◽  
M. Zarifakis ◽  
A. S. Titov
Keyword(s):  
Ferromagnetic Nanoparticles ◽  
Magnetization Dynamics ◽  
Thermal Agitation

THERMAL RELAXATION IN MAGNETIC MATERIALS: A SURVEY

SPIN ◽  
2013 ◽  
Vol 03 (02) ◽  
pp. 1330005 ◽  
Author(s):  
IVO KLIK ◽  
CHING-RAY CHANG
Keyword(s):  
Numerical Simulations ◽  
Magnetic Materials ◽  
Curie Point ◽  
Statistical Physics ◽  
Stochastic Dynamics ◽  
Thermal Relaxation ◽  
Bloch Equation ◽  
Numerical Calculations ◽  
Magnetization Dynamics ◽  
Thermal Agitation

This paper presents a survey of the methods of statistical physics which are applied to the problem of thermal agitation in magnetic materials. The main focus of the work is the stochastic dynamics described by the Landau-Lifshitz-Gilbert equation for which most analytic results are known, and which has been most commonly used in numerical simulations. We also present the much more recent Landau–Lifshitz–Bloch equation and the numerical calculations describing magnetization dynamics close to the Curie point. The paper is concluded by a description of the newly introduced jump-noise and of the Barkhausen jumps.

Path Integral Approach to Stochastic Magnetization Dynamics in Uniaxial Ferromagnetic Nanoparticles

2008 ◽  
Vol 44 (11) ◽  
pp. 3157-3160 ◽  
Author(s):  
C. Serpico ◽  
G. Bertotti ◽  
M. d'Aquino ◽  
C. Ragusa ◽  
P. Ansalone ◽  
...  
Keyword(s):  
Path Integral ◽  
Integral Approach ◽  
Ferromagnetic Nanoparticles ◽  
Magnetization Dynamics ◽  
Path Integral Approach

Collective effects in artificial two-dimensional lattices of ferromagnetic nanoparticles

2000 ◽  
Vol 170 (3) ◽  
pp. 331 ◽  
Author(s):  
S.A. Gusev ◽  
Yu.N. Nozdrin ◽  
M.V. Sapozhnikov ◽  
A.A. Fraerman
Keyword(s):  
Collective Effects ◽  
Ferromagnetic Nanoparticles ◽  
Two Dimensional

scholarly journals Ultrafast optical manipulation of magnetic order in ferromagnetic materials

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Chuangtang Wang ◽  
Yongmin Liu
Keyword(s):  
Data Storage ◽  
Optical Switching ◽  
Ultrafast Lasers ◽  
Transport Model ◽  
Magnetic Interaction ◽  
Ferromagnetic Materials ◽  
Magnetic Storage ◽  
Magnetization Dynamics ◽  
Quarter Century ◽  
Ultrafast Optical

Abstract The interaction between ultrafast lasers and magnetic materials is an appealing topic. It not only involves interesting fundamental questions that remain inconclusive and hence need further investigation, but also has the potential to revolutionize data storage technologies because such an opto-magnetic interaction provides an ultrafast and energy-efficient means to control magnetization. Fruitful progress has been made in this area over the past quarter century. In this paper, we review the state-of-the-art experimental and theoretical studies on magnetization dynamics and switching in ferromagnetic materials that are induced by ultrafast lasers. We start by describing the physical mechanisms of ultrafast demagnetization based on different experimental observations and theoretical methods. Both the spin-flip scattering theory and the superdiffusive spin transport model will be discussed in detail. Then, we will discuss laser-induced torques and resultant magnetization dynamics in ferromagnetic materials. Recent developments of all-optical switching (AOS) of ferromagnetic materials towards ultrafast magnetic storage and memory will also be reviewed, followed by the perspectives on the challenges and future directions in this emerging area.

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