Time-Dependence effect in alumite recording media with perpendicular anisotropy

Kim, Phan Le and Lodder, Cock (1999) Time-Dependence effect in alumite recording media with perpendicular anisotropy. IEICE Transactions on Electronics, E82-C (12). pp. 2176-2183. ISSN 0916-8524

PDF
Restricted to UT campus only: Request a copy
1752Kb

Abstract:	In this paper, we will present a study of the time-dependence effect in alumite perpendicular media at different thicknesses. Important parameters of the time-dependence effect such as magnetic viscosity and activation volume are investigated. Viscosity as a function of applied field (viscosity curve) exhibits a short plateau at a low field and then decreases monotonously with increasing field. After correcting for the demagnetizing field, the shape of the intrinsic viscosity curves changes to the well-known shape of the viscosity curve of in-plane media, i.e., they have a peak near Hc. The intrinsic viscosity curves obtained from the experiments were fitted to an analytical model by Chantrell et al., from which, we found that the effective switching volumes obtained by fitting are much smaller than the column volumes, indicating that the reversal mechanism is incoherent.
Item Type:	Article
Copyright:	© 1999 Institute of Electronics, Information and Communication Engineers
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Transducers Science and Technology (TST)
Link to this item:	http://purl.utwente.nl/publications/62979
Export this item as:	BibTeX EndNote HTML Citation Reference Manager

Show download statistics for this publication

Repository Staff Only: item control page

Metis ID: 111921