Thickness and angular dependent ferromagnetic resonance of ultra-low damping Co25Fe75 epitaxial films

Cheng, Yang; Lee, Aidan J.; Brangham, Jack T.; White, Shane P.; Ruane, William T.; Hammel, P. Chris; Yang, Fengyuan

doi:10.1063/1.5055872

Title: Thickness and angular dependent ferromagnetic resonance of ultra-low damping Co₂₅Fe₇₅ epitaxial films

Abstract

Metallic ferromagnets with ultra-low damping are highly desirable for charge-based spintronic applications. In this work, we systematically investigate the magnetic dynamics of Co₂₅Fe₇₅ epitaxial films with a Gilbert damping constant as low as 7.1×10^-4. The in-plane angular dependence of ferromagnetic resonance (FMR) was measured on various thicknesses Co₂₅Fe₇₅ films grown on MgO and MgAl₂O₄, from which the mechanisms for FMR linewidth broadening can be distinguished and quantified. The thickness dependencies of the magnetic anisotropy and inhomogeneous broadening of the linewidth are good indicators of crystal quality and magnet uniformity. Additionally, it is shown that anisotropic two-magnon scattering is induced by defects at the surfaces.

Authors:

Cheng, Yang ^[1]; Lee, Aidan J. ^[1]; Brangham, Jack T. ^[1]; White, Shane P. ^[1]; Ruane, William T. ^[1];

^[1]; Yang, Fengyuan ^[1]

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

Publication Date:: Thu Dec 27 00:00:00 EST 2018

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

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

OSTI Identifier:: 1609473

Grant/Contract Number:: FG02-03ER46054; DMR-1507274; DMR-1420451

Resource Type:: Accepted Manuscript

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 113; Journal Issue: 26; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics

Citation Formats


                    Cheng, Yang, Lee, Aidan J., Brangham, Jack T., White, Shane P., Ruane, William T., Hammel, P. Chris, and Yang, Fengyuan. Thickness and angular dependent ferromagnetic resonance of ultra-low damping Co25Fe75 epitaxial films.  United States: N. p., 2018. 
Web.  doi:10.1063/1.5055872.

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                    Cheng, Yang, Lee, Aidan J., Brangham, Jack T., White, Shane P., Ruane, William T., Hammel, P. Chris, & Yang, Fengyuan. Thickness and angular dependent ferromagnetic resonance of ultra-low damping Co25Fe75 epitaxial films.  United States.  https://doi.org/10.1063/1.5055872

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                    Cheng, Yang, Lee, Aidan J., Brangham, Jack T., White, Shane P., Ruane, William T., Hammel, P. Chris, and Yang, Fengyuan. Thu .  
"Thickness and angular dependent ferromagnetic resonance of ultra-low damping Co25Fe75 epitaxial films".  United States.  https://doi.org/10.1063/1.5055872.  https://www.osti.gov/servlets/purl/1609473.

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@article{osti_1609473,

  title        = {Thickness and angular dependent ferromagnetic resonance of ultra-low damping Co25Fe75 epitaxial films},

  author       = {Cheng, Yang and Lee, Aidan J. and Brangham, Jack T. and White, Shane P. and Ruane, William T. and Hammel, P. Chris and Yang, Fengyuan},

  abstractNote = {Metallic ferromagnets with ultra-low damping are highly desirable for charge-based spintronic applications. In this work, we systematically investigate the magnetic dynamics of Co25Fe75 epitaxial films with a Gilbert damping constant as low as 7.1×10-4. The in-plane angular dependence of ferromagnetic resonance (FMR) was measured on various thicknesses Co25Fe75 films grown on MgO and MgAl2O4, from which the mechanisms for FMR linewidth broadening can be distinguished and quantified. The thickness dependencies of the magnetic anisotropy and inhomogeneous broadening of the linewidth are good indicators of crystal quality and magnet uniformity. Additionally, it is shown that anisotropic two-magnon scattering is induced by defects at the surfaces.},

  doi          = {10.1063/1.5055872},

  journal      = {Applied Physics Letters},

  number       = 26,

  volume       = 113,

  place        = {United States},

  year         = {Thu Dec 27 00:00:00 EST 2018},

  month        = {Thu Dec 27 00:00:00 EST 2018}

}

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Works referencing / citing this record:

Magnetoelasticity of Co25Fe75 thin films
journal, September 2019

Schwienbacher, Daniel; Pernpeintner, Matthias; Liensberger, Lukas
Journal of Applied Physics, Vol. 126, Issue 10
DOI: 10.1063/1.5116314

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Title: Thickness and angular dependent ferromagnetic resonance of ultra-low damping Co25Fe75 epitaxial films

Abstract

Citation Formats

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Title: Thickness and angular dependent ferromagnetic resonance of ultra-low damping Co₂₅Fe₇₅ epitaxial films

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