DocumentCode :
906899
Title :
Monte Carlo Investigation of Grain Size Dependence of Magnetic Properties
Author :
Laosiritaworn, Yongyut
Author_Institution :
Dept. of Phys. & Mater. Sci., Chiang Mai Univ., Chiang Mai
Volume :
45
Issue :
6
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
2659
Lastpage :
2662
Abstract :
In this work, Monte Carlo simulation was used to study the grain size dependence of ferromagnetic properties. The Ising model and the spin flip algorithm were used to observe the grain size effect on both static and dynamic properties. From the results, it was found that the competition between the grain size and cluster size of same spins (which is controlled by the dipolar interaction) plays a crucial role on ferromagnetic behavior. For instance, at a particular grain size, the ferromagnetic phase transition shifts to a lower temperature with increasing the dipolar magnitude. On the other hand, by increasing the grain size, the ferromagnetic hysteresis can either be enhanced or deteriorated depending on the magnitude of the dipolar interaction, where to some extent agree with applicable experiments. This therefore suggests a way to tune the ferromagnetic properties by varying the grain size or the dipolar magnitude.
Keywords :
Ising model; Monte Carlo methods; ferromagnetism; grain size; magnetic hysteresis; magnetic moments; magnetic transitions; Ising model; Monte Carlo simulation; dipolar interaction; dipolar magnitude; ferromagnetic hysteresis; ferromagnetic phase transition; grain size; spin flip algorithm; Grain size dependence; Ising model; Monte Carlo method; magnetic properties;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2009.2018950
Filename :
4957810
Link To Document :
بازگشت