DocumentCode :
1530204
Title :
Effect of intergranular exchange on thermal energy barrier distribution in longitudinal magnetic recording
Author :
Zhou, Hong ; Bertram, H. Neal ; Torabi, Adam F. ; Mallary, Michael L.
Author_Institution :
Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA
Volume :
37
Issue :
4
fYear :
2001
fDate :
7/1/2001 12:00:00 AM
Firstpage :
1558
Lastpage :
1560
Abstract :
Micromagnetic simulations have been performed to examine thermal energy barrier distributions in longitudinal recording. Results show that intergranular exchange reduces the energy barrier distribution width compared to the width of the physical volume distribution, which agrees well with experimental measurements. The rms average energy barrier is almost unchanged by the interactions. Intergranular magnetostatic interactions also decrease the thermal energy barrier width but only for either small exchange or small volume distributions. These results indicate that a measurement of energy barrier width reduction can be used to estimate the intergranular exchange of a typical longitudinal medium
Keywords :
digital simulation; exchange interactions (electron); magnetic recording; energy barrier width reduction; intergranular exchange; intergranular magnetostatic interactions; longitudinal magnetic recording; micromagnetic simulations; rms average energy barrier; thermal energy barrier distribution; Energy barrier; Energy measurement; Equations; Magnetic materials; Magnetic recording; Magnetization; Magnetostatics; Micromagnetics; Temperature; Thermal stability;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.950899
Filename :
950899
Link To Document :
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