Journal
JOURNAL OF APPLIED PHYSICS
Volume 110, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3662919
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Funding
- EPSRC [EP/G032300/1, EP/G032440/1]
- Royal Society
- University of Sheffield
- EPSRC [EP/G032440/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G032440/1] Funding Source: researchfish
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A combined micromagnetic and nudged elastic band method was used to investigate the utility of a one-grain model in describing the switching field of CoCrPt perpendicular recording media as a function of applied field angle at finite temperatures of 150 K, 292K and 350 K. The effect of grain diameter, attempt frequency, and thermal activation on the switching field were investigated. The results of the simulations show good agreement with vector vibrating sample magnetometer measurements on well segregated, single layer CoCrPt-SiOx recording media and demonstrate that thermal activation modifies the Stoner-Wohlfarth angle dependency of the switching field by reducing the depth of the minimum that occurs at 45 degrees. (C) 2011 American Institute of Physics. [doi:10.1063/1.3662919]
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