Epitaxial Co50Fe50(110)/Pt(111) films on MgAl2O4 (001) and its enhancement of perpendicular magnetic anisotropy

Lee, Aidan J.; Ahmed, Adam S.; Guo, Side; Esser, Bryan D.; McComb, David W.; Yang, Fengyuan

doi:10.1063/1.5093503

Title: Epitaxial Co₅₀Fe₅₀(110)/Pt(111) films on MgAl₂O₄ (001) and its enhancement of perpendicular magnetic anisotropy

Journal Article · Tue May 14 00:00:00 EDT 2019 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.5093503· OSTI ID:1594113

Lee, Aidan J. ^[1]; Ahmed, Adam S. ^[1]; Guo, Side ^[1];

^[1]; McComb, David W. ^[1];

^[1]

The Ohio State Univ., Columbus, OH (United States)

Perpendicular magnetic anisotropy (PMA) in magnetic thin films with low coercivity is desirable for magnetic memory devices. It has been discovered that a (111)-oriented or textured Pt seed layer can enhance PMA and is, therefore, commonly utilized in spintronic structures. We grow (111)-oriented Pt epitaxial films via off-axis sputtering on various substrates and investigate the optimal substrate and orientation for high quality, epitaxial growth. Our results show that Pt(111) epitaxial films grow remarkably well on MgAl₂O₄(001) with an exceptionally narrow X-ray diffraction rocking curve. This high-quality seed layer is determined to promote epitaxial growth of Pt/Co₅₀Fe₅₀/Pt trilayers with strong PMA comparable to many repeats of the magnetic multilayers reported previously. In addition, the Pt seed layer enhances the maximum thicknesses of Co₅₀Fe₅₀ that can still maintain PMA up to 1.07 nm.

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Research Organization:: The Ohio State Univ., Columbus, OH (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: SC0001304

OSTI ID:: 1594113

Alternate ID(s):: OSTI ID: 1512539

Report Number(s):: DOE-OSU-01304; TRN: US2101099

Journal Information:: Journal of Applied Physics, Vol. 125, Issue 18; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 6 works

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Title: Epitaxial Co50Fe50(110)/Pt(111) films on MgAl2O4 (001) and its enhancement of perpendicular magnetic anisotropy

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Title: Epitaxial Co₅₀Fe₅₀(110)/Pt(111) films on MgAl₂O₄ (001) and its enhancement of perpendicular magnetic anisotropy