Directly Excited Backward Volume Spin Waves in Permalloy Microstrips

H. J.Jason Liu; Grant A. Riley; Kristen S. Buchanan

doi:10.1109/LMAG.2015.2495162

Directly Excited Backward Volume Spin Waves in Permalloy Microstrips

H. J.Jason Liu, Grant A. Riley, Kristen S. Buchanan

Biochemistry, Chemistry & Physics

Colorado State University

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

9 Scopus citations

Abstract

A patterned magnetic microstrip will remain saturated along its length at remanence so the backward volume (BV) configuration is a natural geometry for spin wave devices, yet there are few experimental studies of spin waves in this geometry. In this paper, BV spin waves that were directly excited by a micrometer-sized antenna in a Permalloy microstrip were studied using microfocus Brillouin light scattering. The measured BV spin wave excitation efficiencies are approximately an order of magnitude smaller compared to the more commonly studied DamonEshbach configuration where the static magnetization is in-plane, perpendicular to the microstrip. Nevertheless, measureable signals were detected for a range of fields including zero magnetic field, which is important for applications.

Original language	English
Article number	7307127
Journal	IEEE Magnetics Letters
Volume	6
DOIs	https://doi.org/10.1109/LMAG.2015.2495162
State	Published - 2015

Scopus Subject Areas

Electronic, Optical and Magnetic Materials

Keywords

Magnetization Dynamics
Magnonics
Nanomagnetics
Spin Waves (up to four terms, suggestions welcome)

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10.1109/LMAG.2015.2495162

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title = "Directly Excited Backward Volume Spin Waves in Permalloy Microstrips",

abstract = "A patterned magnetic microstrip will remain saturated along its length at remanence so the backward volume (BV) configuration is a natural geometry for spin wave devices, yet there are few experimental studies of spin waves in this geometry. In this paper, BV spin waves that were directly excited by a micrometer-sized antenna in a Permalloy microstrip were studied using microfocus Brillouin light scattering. The measured BV spin wave excitation efficiencies are approximately an order of magnitude smaller compared to the more commonly studied DamonEshbach configuration where the static magnetization is in-plane, perpendicular to the microstrip. Nevertheless, measureable signals were detected for a range of fields including zero magnetic field, which is important for applications.",

keywords = "Magnetization Dynamics, Magnonics, Nanomagnetics, Spin Waves (up to four terms, suggestions welcome)",

author = "Liu, {H. J.Jason} and Riley, {Grant A.} and Buchanan, {Kristen S.}",

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language = "English",

volume = "6",

journal = "IEEE Magnetics Letters",

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AU - Liu, H. J.Jason

AU - Riley, Grant A.

AU - Buchanan, Kristen S.

PY - 2015

Y1 - 2015

N2 - A patterned magnetic microstrip will remain saturated along its length at remanence so the backward volume (BV) configuration is a natural geometry for spin wave devices, yet there are few experimental studies of spin waves in this geometry. In this paper, BV spin waves that were directly excited by a micrometer-sized antenna in a Permalloy microstrip were studied using microfocus Brillouin light scattering. The measured BV spin wave excitation efficiencies are approximately an order of magnitude smaller compared to the more commonly studied DamonEshbach configuration where the static magnetization is in-plane, perpendicular to the microstrip. Nevertheless, measureable signals were detected for a range of fields including zero magnetic field, which is important for applications.

AB - A patterned magnetic microstrip will remain saturated along its length at remanence so the backward volume (BV) configuration is a natural geometry for spin wave devices, yet there are few experimental studies of spin waves in this geometry. In this paper, BV spin waves that were directly excited by a micrometer-sized antenna in a Permalloy microstrip were studied using microfocus Brillouin light scattering. The measured BV spin wave excitation efficiencies are approximately an order of magnitude smaller compared to the more commonly studied DamonEshbach configuration where the static magnetization is in-plane, perpendicular to the microstrip. Nevertheless, measureable signals were detected for a range of fields including zero magnetic field, which is important for applications.

KW - Magnetization Dynamics

KW - Magnonics

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JO - IEEE Magnetics Letters

JF - IEEE Magnetics Letters

M1 - 7307127

ER -

Directly Excited Backward Volume Spin Waves in Permalloy Microstrips

Abstract

Scopus Subject Areas

Keywords

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