Title :
Hysteresis loop testing for continuous media by energy minimization
Author :
Wang Hongtao ; Yuan Zhimin ; Chan Kheong Sann
Author_Institution :
Data Storage Inst., A*STAR (Agency for Sci., Technol. & Res.), Singapore, Singapore
Abstract :
Hysteresis Loop has been investigated for continuous media by using the energy minimization approach. The domain wall energy is included into the total free energy which is being minimized directly to achieve the equilibrium status of the discretized continuous media. The effects of exchange coupling constant on the hysteresis loop also get studied. It is carried out to make a comparison among the micromagnetic approaches based on the Landau-Lifshitz-Gilbert (LLG) equation and the total free energy equations with and without domain wall energy.
Keywords :
free energy; magnetic domain walls; magnetic hysteresis; micromagnetics; perpendicular magnetic recording; LLG equation; Landau-Lifshitz-Gilbert equation; discretized continuous media; domain wall energy; energy minimization approach; exchange coupling constant; free energy equations; hysteresis loop testing; micromagnetic approaches; Couplings; Equations; Magnetic hysteresis; Media; Micromagnetics; Minimization; Testing; continuous media; energy minimization; hysteresis loop; micromagnetics; perpendicular magnetic recording;
Conference_Titel :
Magnetics Symposium 2014 - Celebrating 50th Anniversary of IEEE Magnetics Society (MSSC50)
Conference_Location :
Singapore
DOI :
10.1109/MSSC.2014.6947940