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.
@article{arxiv.0901.1189,
title = {Magnetic structure of domain walls confined in a nano-oxide layer},
author = {Katsuyoshi Matsushita and Jun Sato and Hiroshi Imamura},
journal= {arXiv preprint arXiv:0901.1189},
year = {2009}
}
Comments
3 pages, 3 figures, proceedings paper of Intermag 2008