Back to Search
Start Over
Difference in coercivity between Co/Fe and Fe/Co bilayers.
- Source :
- Journal of Applied Physics; 5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p7218, 3p, 1 Black and White Photograph, 1 Diagram, 3 Graphs
- Publication Year :
- 2002
-
Abstract
- A study of the deposition order and film thickness dependence on the coercivity of ferromagnetic bilayers, Co/Fe and Fe/Co, is presented (the sign, "," is for indicating glass or Si substrate position). The magnetization of the Co layer is aligned with the in-plane direction during rf sputter deposition. The thickness is controlled in the range of 3-22 nm. Since there exists a strong exchange interaction between the two ferromagnetic layers, the magnetization reversal process occurs cooperatively, Fe/Co shows an isotropic and hard-magnetic behavior, whereas Co/Fe shows an anisotropic and soft-magnetic behavior. A sudden drop of coercivity in Fe/Co observed at the Fe layer thickness below 5 nm is caused by a decrease in the saturation magnetization of the Fe layer. Due to the surface roughness, the bilayer on the glass substrate possesses a higher coercivity than that of the bilayer deposited on the silicon substrate. The magnetization reversal process of the ferromagnetic bilayers is discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- MAGNETIC films
FERROMAGNETIC materials
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 91
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 6667055
- Full Text :
- https://doi.org/10.1063/1.1448806