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

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. ^[2]; Guo, Side ^[2]; ^[2]; McComb, David W. ^[2]; ^[2]

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

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: SC0001304

OSTI ID:: 1594113

Alternate ID(s):: OSTI ID: 1512539

Report Number(s):: DOE-OSU--01304

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

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

Country of Publication:: United States

Language:: English

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

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