Abstract
In this paper, we will present a study on magnetic viscosity of alumite perpendicular media at different thicknesses. Viscosity as a function of applied field(viscosity curve) exhibits a short plateau at 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 viscosity curve of in-plane media, i.e. they have a peak near H_c. The intrinsic viscosity curves obtained from experiments were fitted to an analytical model of Chantrell et al. [1], 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.
Original language | English |
---|---|
Title of host publication | Third Asian Symposium on Information Storage Technology, ASIST-3 |
Place of Publication | Singapore |
Publisher | Institute of Image Information and Television Engineers |
Pages | 81-88 |
Number of pages | 8 |
DOIs | |
Publication status | Published - 25 Feb 1999 |
Event | 3rd Asian Symposium on Information Storage Technology, ASIST 1999 - Singapore, Singapore Duration: 1 Feb 1999 → 2 Feb 1999 Conference number: 3 |
Publication series
Name | ITE Technical Report |
---|---|
Publisher | The Institute of Image Information and Television Engineers |
Number | 15 |
Volume | 23 |
ISSN (Print) | 1342-6893 |
Conference
Conference | 3rd Asian Symposium on Information Storage Technology, ASIST 1999 |
---|---|
Abbreviated title | ASIST |
Country/Territory | Singapore |
City | Singapore |
Period | 1/02/99 → 2/02/99 |
Keywords
- Perpendicular media
- Alumite
- Time-dependence effects
- Viscosity
- Activation volume
- Reversal mechanism