Experimental determination of the distribution of relaxation time for thermally activated transition in thin film magnetic recording media
- 15 April 1999
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 85 (8) , 5000-5002
- https://doi.org/10.1063/1.370071
Abstract
Although grain size distribution has significant effects on the time decay behavior of thin film magnetic recording media, the grains size itself is not a truly independent parameter due to intergranular exchange coupling. Relaxation time incorporates the interaction. Its distribution will determine the time decay performance of thin film magnetic recording media. An algorithm is proposed to determine the unique distribution of relaxation time in magnetic recording media directly from the experimental data without any presumption. It was found for the first time that the distribution of relaxation time is very well described by Weibull distribution.This publication has 4 references indexed in Scilit:
- Thermal decay in high density disk mediaIEEE Transactions on Magnetics, 1998
- De-noising by soft-thresholdingIEEE Transactions on Information Theory, 1995
- Time dependence of magnetization decay in spin glassesJournal of Applied Physics, 1985
- Large-scale linearly constrained optimizationMathematical Programming, 1978