论文信息 - Thermal energy barrier distribution measurements in perpendicular media

Thermal energy barrier distribution measurements in perpendicular media

dc demagnetized remanent curves at different applied field time durations have been applied to measure the thermal energy barrier distribution of two sets of perpendicular alloy media. Sharrock’s formula is applied at all levels of percentages of magnetization switching. The measured energy barrier distribution width decreases with increasing intergranular exchange coupling and with reducing intergranular magnetostatic interactions. The results agree well with micromagnetic simulations.

[1] H. Richter,et al. Linear density dependence of thermal decay in longitudinal recording , 2002 .

[2] H. Bertram,et al. Micromagnetic analysis of the effect of intergranular exchange on thermal stability in magnetic recording. III. Perpendicular media , 2002 .

[3] H. Bertram,et al. Effect of intergranular interactions on thermal energy barrier distribution in perpendicular media , 2002 .

[4] S. I. Woods,et al. Direct investigation of superparamagnetism in Co nanoparticle films. , 2001, Physical review letters.

[5] M. Mallary,et al. Measurement of thermal stability factor distribution in thin film media , 2001 .

[6] D. Sellmyer,et al. Coercivity of titanium-substituted high-temperature permanent magnets , 2001 .

[7] Roger Wood,et al. The feasibility of magnetic recording at 1 Terabit per square inch , 2000 .

[8] M. Williams,et al. SNR and density limit estimates: a comparison of longitudinal and perpendicular recording , 2000 .

[9] M. Sharrock,et al. Time dependence of switching fields in magnetic recording media (invited) , 1994 .