Perpendicular magnetic anisotropy and spin reorientation transition in L10 FePt films

Jae Young Ahn; Nyun Jong Lee; Tae Hee Kim; J. H. Lee; Anny Michel; Dominique Eyidi

doi:10.1063/1.3562506

Perpendicular magnetic anisotropy and spin reorientation transition in L1₀ FePt films

Jae Young Ahn, Nyun Jong Lee, Tae Hee Kim, J. H. Lee, Anny Michel, Dominique Eyidi

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We investigated the thickness and composition dependence of perpendicular magnetic anisotropy (PMA) in L1₀ Fe_1-xPt_x (x =0.4, 0.5, and 0.55) films. The FePt films with different thicknesses of 35 and 70 were grown at the substrate temperature T_s = 300°C by molecular beam epitaxy coevaporation technique. A (001)-oriented epitaxial L1₀ FePt film was grown on the thin (001)-oriented fcc Pt layer, while a poorly crystallized FePt film was formed on the (111)-textured Pt layer. Our results showed that, at a fixed thickness of 70 , the PMA of FePt alloy films is enhanced as Pt content increases from 40 to 55.

Original language	English
Article number	07B760
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3562506
State	Published - 1 Apr 2011

Bibliographical note

Funding Information:
The authors gratefully acknowledge financial support by the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, South Korea and the National Research Foundation of Korea (NRF) through the Quantum Meta-Materials Research Center.

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10.1063/1.3562506

Cite this

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title = "Perpendicular magnetic anisotropy and spin reorientation transition in L10 FePt films",

abstract = "We investigated the thickness and composition dependence of perpendicular magnetic anisotropy (PMA) in L10 Fe1-xPtx (x =0.4, 0.5, and 0.55) films. The FePt films with different thicknesses of 35 and 70 were grown at the substrate temperature Ts = 300°C by molecular beam epitaxy coevaporation technique. A (001)-oriented epitaxial L10 FePt film was grown on the thin (001)-oriented fcc Pt layer, while a poorly crystallized FePt film was formed on the (111)-textured Pt layer. Our results showed that, at a fixed thickness of 70 , the PMA of FePt alloy films is enhanced as Pt content increases from 40 to 55.",

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T1 - Perpendicular magnetic anisotropy and spin reorientation transition in L10 FePt films

AU - Ahn, Jae Young

AU - Lee, Nyun Jong

AU - Kim, Tae Hee

AU - Lee, J. H.

AU - Michel, Anny

AU - Eyidi, Dominique

N1 - Funding Information: The authors gratefully acknowledge financial support by the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, South Korea and the National Research Foundation of Korea (NRF) through the Quantum Meta-Materials Research Center.

PY - 2011/4/1

Y1 - 2011/4/1

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AB - We investigated the thickness and composition dependence of perpendicular magnetic anisotropy (PMA) in L10 Fe1-xPtx (x =0.4, 0.5, and 0.55) films. The FePt films with different thicknesses of 35 and 70 were grown at the substrate temperature Ts = 300°C by molecular beam epitaxy coevaporation technique. A (001)-oriented epitaxial L10 FePt film was grown on the thin (001)-oriented fcc Pt layer, while a poorly crystallized FePt film was formed on the (111)-textured Pt layer. Our results showed that, at a fixed thickness of 70 , the PMA of FePt alloy films is enhanced as Pt content increases from 40 to 55.

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