Magnetic structure of domain walls confined in a nano-oxide layer

Matsushita, Katsuyoshi; Sato, Jun; Imamura, Hiroshi

Magnetic structure of domain walls confined in a nano-oxide layer

Authors

Matsushita, Katsuyoshi

Sato, Jun

Imamura, Hiroshi

Description

In the recent years, a spin-valve was developed with a current-confined-path structure consisting of a non-oxide-layer (NOL). We analyze magnetic structures of the current-confinedpath in the nano-oxide layer sandwiched between ferromagnetic electrodes and clarify the dependency of the magnetic structure on the shape and size of the current-confined-path. Our results of stiffness energy density and thermal stability shows that we should fabricate a CPP spin-valve with narrow current-confinedpaths with large aspect ratio and strong constriction in order to enhance the MR ratio.
3 pages, 3 figures, proceedings paper of Intermag 2008