Pseudomorphic Yttrium Iron Garnet Thin Films with Low Damping and Inhomogeneous Linewidth Broadening

Brandon M. Howe; Satoru Emori; Hyung Min Jeon; Trevor M. Oxholm; John G. Jones; Krishnamurthy Mahalingam; Yan Zhuang; Nian X. Sun; Gail J. Brown

doi:10.1109/LMAG.2015.2449260

Pseudomorphic Yttrium Iron Garnet Thin Films with Low Damping and Inhomogeneous Linewidth Broadening

Brandon M. Howe, Satoru Emori, Hyung Min Jeon, Trevor M. Oxholm, John G. Jones, Krishnamurthy Mahalingam, Yan Zhuang, Nian X. Sun, Gail J. Brown

Electrical Engineering

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

Abstract

Nanometer-thick yttrium iron garnet films, grown on gadolinium gallium garnet substrates by pulsed laser deposition, exhibit remarkably high crystallinity and atomically smooth surfaces. The pseudomorphic growth mechanism leads to large negative out-of-plane uniaxial anisotropy, narrow resonance linewidths, and minimal damping. Magnetic resonance measurements indicate that both the Gilbert damping parameter and inhomogeneous linewidth broadening Δ Hpp,0 are consistently low for films of various thicknesses. Even at film thickness ≈ 20 nm, we attain α 2× 10-4 and Δ Hpp,0 ≈ 1 Oe, which are among the lowest values ever reported.

Original language	English
Article number	7132706
Journal	IEEE Magnetics Letters
Volume	6
DOIs	https://doi.org/10.1109/LMAG.2015.2449260
State	Published - Jan 1 2015

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials

Keywords

ferromagnetic resonance
magnetic damping
Magnetodynamics
yttrium iron garnet
ferromagnetic resonance, magnetic damping, Magnetodynamics, yttrium iron garnet

Disciplines

Electrical and Computer Engineering

Access to Document

10.1109/LMAG.2015.2449260

Cite this

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title = "Pseudomorphic Yttrium Iron Garnet Thin Films with Low Damping and Inhomogeneous Linewidth Broadening",

abstract = "Nanometer-thick yttrium iron garnet films, grown on gadolinium gallium garnet substrates by pulsed laser deposition, exhibit remarkably high crystallinity and atomically smooth surfaces. The pseudomorphic growth mechanism leads to large negative out-of-plane uniaxial anisotropy, narrow resonance linewidths, and minimal damping. Magnetic resonance measurements indicate that both the Gilbert damping parameter and inhomogeneous linewidth broadening Δ Hpp,0 are consistently low for films of various thicknesses. Even at film thickness ≈ 20 nm, we attain α 2× 10-4 and Δ Hpp,0 ≈ 1 Oe, which are among the lowest values ever reported.",

keywords = "ferromagnetic resonance, magnetic damping, Magnetodynamics, yttrium iron garnet, ferromagnetic resonance, magnetic damping, Magnetodynamics, yttrium iron garnet",

author = "Howe, {Brandon M.} and Satoru Emori and Jeon, {Hyung Min} and Oxholm, {Trevor M.} and Jones, {John G.} and Krishnamurthy Mahalingam and Yan Zhuang and Sun, {Nian X.} and Brown, {Gail J.}",

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year = "2015",

month = jan,

day = "1",

doi = "10.1109/LMAG.2015.2449260",

language = "English",

volume = "6",

journal = "IEEE Magnetics Letters",

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T1 - Pseudomorphic Yttrium Iron Garnet Thin Films with Low Damping and Inhomogeneous Linewidth Broadening

AU - Howe, Brandon M.

AU - Emori, Satoru

AU - Jeon, Hyung Min

AU - Oxholm, Trevor M.

AU - Jones, John G.

AU - Mahalingam, Krishnamurthy

AU - Zhuang, Yan

AU - Sun, Nian X.

AU - Brown, Gail J.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Nanometer-thick yttrium iron garnet films, grown on gadolinium gallium garnet substrates by pulsed laser deposition, exhibit remarkably high crystallinity and atomically smooth surfaces. The pseudomorphic growth mechanism leads to large negative out-of-plane uniaxial anisotropy, narrow resonance linewidths, and minimal damping. Magnetic resonance measurements indicate that both the Gilbert damping parameter and inhomogeneous linewidth broadening Δ Hpp,0 are consistently low for films of various thicknesses. Even at film thickness ≈ 20 nm, we attain α 2× 10-4 and Δ Hpp,0 ≈ 1 Oe, which are among the lowest values ever reported.

AB - Nanometer-thick yttrium iron garnet films, grown on gadolinium gallium garnet substrates by pulsed laser deposition, exhibit remarkably high crystallinity and atomically smooth surfaces. The pseudomorphic growth mechanism leads to large negative out-of-plane uniaxial anisotropy, narrow resonance linewidths, and minimal damping. Magnetic resonance measurements indicate that both the Gilbert damping parameter and inhomogeneous linewidth broadening Δ Hpp,0 are consistently low for films of various thicknesses. Even at film thickness ≈ 20 nm, we attain α 2× 10-4 and Δ Hpp,0 ≈ 1 Oe, which are among the lowest values ever reported.

KW - ferromagnetic resonance

KW - magnetic damping

KW - Magnetodynamics

KW - yttrium iron garnet

KW - ferromagnetic resonance, magnetic damping, Magnetodynamics, yttrium iron garnet

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Pseudomorphic Yttrium Iron Garnet Thin Films with Low Damping and Inhomogeneous Linewidth Broadening

Abstract

ASJC Scopus Subject Areas

Keywords

Disciplines

Access to Document

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