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Multilayer exchange spring media for magnetic recording.
- Source :
-
Applied Physics Letters . 9/11/2006, Vol. 89 Issue 11, p113105. 3p. 3 Graphs. - Publication Year :
- 2006
-
Abstract
- The concept of exchange spring media is extended from two layers to N layers. The coercive field of the multilayer structure decreases with 1/N while the energy barrier is only determined by the magnetic properties of the hardest layer. A 25 nm thick trilayer has a 7.5 times smaller coercive field (1.4 T) as a single layer at the same thermal stability and for the same value of the magnetization. A continuous variation of the anisotropy in the recording media reduces the coercive field by a factor of 10 for a layer thickness of 25 nm. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 89
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 22524050
- Full Text :
- https://doi.org/10.1063/1.2347894