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Perpendicular Magnetic Anisotropy in Amorphous Ferromagnetic CoSiB/Pt Multilayers
- Authors
- Hwang, J. Y.; Park, J. S.; Yim, H. I.; Kim, T. W.; Shin, D. Y.; Lee, S. B.
- Issue Date
- Jan-2011
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Perpendicular Magnetic Anisotropy; CoSiB; Magnetic Multilayers; Thin Films; Coercivity
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.11, no.1, pp 856 - 859
- Pages
- 4
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 11
- Number
- 1
- Start Page
- 856
- End Page
- 859
- ISSN
- 1533-4880
1533-4899
- Abstract
- Magnetic anisotropy properties of amorphous ferromagnetic CoSiB/Pt multilayers with perpendicular magnetic anisotropy (PMA, K-u) were systematically investigated as a function of CoSiB layer thickness (t(coSiB)) and Pt layer thickness (t(pt)). In two series of t(coSiB) /t(ocsiB)/Pt t(pt)](5) multilayers, the perpendicular coercivity (H-c) increased to reach a maximum and then decreased with further increase in both t(coSiB) and t(pt), due to intermixing of CoSiB/Pt interfaces. Particularly, using the amorphous soft magnetic CoSiB, the coercivity became very sensitive to the CoSiB thickness. These multilayer films exhibited a high Ku of 2 x 10(6) erg/cc and a high H-c of 360 Oe with marked squareness. It was found that even after annealing at 350 degrees C, the CoSiB/Pt multilayers had a high PMA and their Hc increased.
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