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Dynamic Coercivity and Thermal Decay of Magnetic Media

  • Kurt Rubin (a1), Jason Goldberg (a1), Hal Rosen (a1), Ernesto Marinero (a1), Mary Doemer (a1) and Manfred Schabes (a1)...

Abstract

Thermally induced decay of longitudinally recorded magnetic transitions is measured on a spin-stand. The decay rate increases with increased linear density and decreases with increased media coercivity. A new spin-stand experimental technique has been developed which allows measurements of the time dependence of the media coercivity as a function of write times spanning short times characteristic of write times in drives to long times associated with VSM measurements. The ratio of long to short write time coercivity was larger for media which are thermally unstable.

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[1] Lu, P. L., Charap, S. H., “High density magnetic recording media design and identification: susceptibility to thermal decay”, IEEE Trans. Magn. Vol. 31, No. 6. (1995) 27672769.
[2] Charap, S. H., Lu, P. L., He, Y., “Thermal stability of recorded information at high densities”, IEEE Trans. Magn. Vol.33, No. 1 (1997) 978983.
[3] Morellon, L. et al. , to be submitted.
[4] Yu, Mingjun, Doerner, Mary and Sellmyer, David, Paper AB-03, MMM-Intermag '98.
[5] Richter, H. et al. , IEEE Trans. Magn. Vol.33, No.1 (1997) p2701.
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MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
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