Damping and modal structure of patterned magnetic nanoarrays

K. Rivkin; I. P. Nevirkovets; O. Chernyashevskyy; J. B. Ketterson; B. K. Sarma; V. Metlushko

doi:10.1016/j.jmmm.2009.06.010

Damping and modal structure of patterned magnetic nanoarrays

K. Rivkin^*, I. P. Nevirkovets, O. Chernyashevskyy, J. B. Ketterson, B. K. Sarma, V. Metlushko

^*Corresponding author for this work

Physics and Astronomy

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

3 Scopus citations

Abstract

A number of studies have shown that ferromagnetic resonance linewidths in magnetic thin films contain a significant contribution due to processes, such as inhomogeneous broadening and two-magnon scattering followed by decay to the phonon thermal bath. We present a classical theoretical approach that permits the calculation of such processes for arrays of arbitrarily shaped magnetic nanoparticles and, by comparison with experimental results, demonstrates that the linewidth broadening and damping are dominated by inhomogenities that strongly depend on the equilibrium state of magnetization and can be used to identify the latter.

Original language	English (US)
Pages (from-to)	3324-3329
Number of pages	6
Journal	Journal of Magnetism and Magnetic Materials
Volume	321
Issue number	19
DOIs	https://doi.org/10.1016/j.jmmm.2009.06.010
State	Published - Oct 2009

Keywords

Ferromagnetic resonance
Inhomogeneous broadening
Spin waves
Two-magnon scattering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2009.06.010

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@article{85836adea8b349ea84a262c226f243b6,

title = "Damping and modal structure of patterned magnetic nanoarrays",

abstract = "A number of studies have shown that ferromagnetic resonance linewidths in magnetic thin films contain a significant contribution due to processes, such as inhomogeneous broadening and two-magnon scattering followed by decay to the phonon thermal bath. We present a classical theoretical approach that permits the calculation of such processes for arrays of arbitrarily shaped magnetic nanoparticles and, by comparison with experimental results, demonstrates that the linewidth broadening and damping are dominated by inhomogenities that strongly depend on the equilibrium state of magnetization and can be used to identify the latter.",

keywords = "Ferromagnetic resonance, Inhomogeneous broadening, Spin waves, Two-magnon scattering",

author = "K. Rivkin and Nevirkovets, {I. P.} and O. Chernyashevskyy and Ketterson, {J. B.} and Sarma, {B. K.} and V. Metlushko",

note = "Funding Information: This research was supported by the National Science foundation under Grants DMR-0509357, DMR-0509691, and EHR04-26328.",

year = "2009",

month = oct,

doi = "10.1016/j.jmmm.2009.06.010",

language = "English (US)",

volume = "321",

pages = "3324--3329",

journal = "Journal of Magnetism and Magnetic Materials",

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TY - JOUR

T1 - Damping and modal structure of patterned magnetic nanoarrays

AU - Rivkin, K.

AU - Nevirkovets, I. P.

AU - Chernyashevskyy, O.

AU - Ketterson, J. B.

AU - Sarma, B. K.

AU - Metlushko, V.

N1 - Funding Information: This research was supported by the National Science foundation under Grants DMR-0509357, DMR-0509691, and EHR04-26328.

PY - 2009/10

Y1 - 2009/10

N2 - A number of studies have shown that ferromagnetic resonance linewidths in magnetic thin films contain a significant contribution due to processes, such as inhomogeneous broadening and two-magnon scattering followed by decay to the phonon thermal bath. We present a classical theoretical approach that permits the calculation of such processes for arrays of arbitrarily shaped magnetic nanoparticles and, by comparison with experimental results, demonstrates that the linewidth broadening and damping are dominated by inhomogenities that strongly depend on the equilibrium state of magnetization and can be used to identify the latter.

AB - A number of studies have shown that ferromagnetic resonance linewidths in magnetic thin films contain a significant contribution due to processes, such as inhomogeneous broadening and two-magnon scattering followed by decay to the phonon thermal bath. We present a classical theoretical approach that permits the calculation of such processes for arrays of arbitrarily shaped magnetic nanoparticles and, by comparison with experimental results, demonstrates that the linewidth broadening and damping are dominated by inhomogenities that strongly depend on the equilibrium state of magnetization and can be used to identify the latter.

KW - Ferromagnetic resonance

KW - Inhomogeneous broadening

KW - Spin waves

KW - Two-magnon scattering

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U2 - 10.1016/j.jmmm.2009.06.010

DO - 10.1016/j.jmmm.2009.06.010

M3 - Article

AN - SCOPUS:67650178605

SN - 0304-8853

VL - 321

SP - 3324

EP - 3329

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 19

ER -

Damping and modal structure of patterned magnetic nanoarrays

Abstract

Keywords

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