Excitation of ferromagnetic resonance using surface acoustic waves

Yukio Nozaki, Shogo Yanagisawa

Research output: Contribution to journalArticle

Abstract

Mechanical rotation of a crystal lattice in ferromagnetic materials can be energetically coupled with its magnetization via magnetoelastic coupling or spin rotation coupling. Surface acoustic wave (SAW) in piezoelectric materials is one of the promising candidates to realize the mechanical excitation of magnetization dynamics. In order to understand the mechanical rotation induced magnetization dynamics quantitatively, we examined the ferromagnetic resonance in a Ni film using a SAW in a LiNbO3 substrate. By decreasing a period of interdigital transducer as short as 4?m which is one-fifth of the previous work by Weiler [M. Weiler et al., Phys. Rev. Lett. 106, 117601 (2011)], the fundamental frequency of SAW could be higher than 800 MHz. From the dependence of microwave absorption on the angle between the magnetization and the wave vector of SAW, it was confirmed that the Rayleigh type SAW, which was significant to obtain a large mechanical coupling with the magnetization, was dominantly excited in the 800-MHz-SAW device.

Original languageEnglish
Pages (from-to)386-391
Number of pages6
JournalIEEJ Transactions on Fundamentals and Materials
Volume137
Issue number7
DOIs
Publication statusPublished - 2017

Fingerprint

Ferromagnetic resonance
Surface waves
Magnetization
Acoustic waves
Acoustic surface wave devices
Ferromagnetic materials
Piezoelectric materials
Crystal lattices
Transducers
Microwaves
Substrates

Keywords

  • Magnetization dynamics
  • Magnetostriction
  • Surface acoustic wave

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Excitation of ferromagnetic resonance using surface acoustic waves. / Nozaki, Yukio; Yanagisawa, Shogo.

In: IEEJ Transactions on Fundamentals and Materials, Vol. 137, No. 7, 2017, p. 386-391.

Research output: Contribution to journalArticle

@article{d947523caa5740388f5a19b5e7dea8c7,
title = "Excitation of ferromagnetic resonance using surface acoustic waves",
abstract = "Mechanical rotation of a crystal lattice in ferromagnetic materials can be energetically coupled with its magnetization via magnetoelastic coupling or spin rotation coupling. Surface acoustic wave (SAW) in piezoelectric materials is one of the promising candidates to realize the mechanical excitation of magnetization dynamics. In order to understand the mechanical rotation induced magnetization dynamics quantitatively, we examined the ferromagnetic resonance in a Ni film using a SAW in a LiNbO3 substrate. By decreasing a period of interdigital transducer as short as 4?m which is one-fifth of the previous work by Weiler [M. Weiler et al., Phys. Rev. Lett. 106, 117601 (2011)], the fundamental frequency of SAW could be higher than 800 MHz. From the dependence of microwave absorption on the angle between the magnetization and the wave vector of SAW, it was confirmed that the Rayleigh type SAW, which was significant to obtain a large mechanical coupling with the magnetization, was dominantly excited in the 800-MHz-SAW device.",
keywords = "Magnetization dynamics, Magnetostriction, Surface acoustic wave",
author = "Yukio Nozaki and Shogo Yanagisawa",
year = "2017",
doi = "10.1541/ieejfms.137.386",
language = "English",
volume = "137",
pages = "386--391",
journal = "IEEJ Transactions on Fundamentals and Materials",
issn = "0385-4205",
publisher = "The Institute of Electrical Engineers of Japan",
number = "7",

}

TY - JOUR

T1 - Excitation of ferromagnetic resonance using surface acoustic waves

AU - Nozaki, Yukio

AU - Yanagisawa, Shogo

PY - 2017

Y1 - 2017

N2 - Mechanical rotation of a crystal lattice in ferromagnetic materials can be energetically coupled with its magnetization via magnetoelastic coupling or spin rotation coupling. Surface acoustic wave (SAW) in piezoelectric materials is one of the promising candidates to realize the mechanical excitation of magnetization dynamics. In order to understand the mechanical rotation induced magnetization dynamics quantitatively, we examined the ferromagnetic resonance in a Ni film using a SAW in a LiNbO3 substrate. By decreasing a period of interdigital transducer as short as 4?m which is one-fifth of the previous work by Weiler [M. Weiler et al., Phys. Rev. Lett. 106, 117601 (2011)], the fundamental frequency of SAW could be higher than 800 MHz. From the dependence of microwave absorption on the angle between the magnetization and the wave vector of SAW, it was confirmed that the Rayleigh type SAW, which was significant to obtain a large mechanical coupling with the magnetization, was dominantly excited in the 800-MHz-SAW device.

AB - Mechanical rotation of a crystal lattice in ferromagnetic materials can be energetically coupled with its magnetization via magnetoelastic coupling or spin rotation coupling. Surface acoustic wave (SAW) in piezoelectric materials is one of the promising candidates to realize the mechanical excitation of magnetization dynamics. In order to understand the mechanical rotation induced magnetization dynamics quantitatively, we examined the ferromagnetic resonance in a Ni film using a SAW in a LiNbO3 substrate. By decreasing a period of interdigital transducer as short as 4?m which is one-fifth of the previous work by Weiler [M. Weiler et al., Phys. Rev. Lett. 106, 117601 (2011)], the fundamental frequency of SAW could be higher than 800 MHz. From the dependence of microwave absorption on the angle between the magnetization and the wave vector of SAW, it was confirmed that the Rayleigh type SAW, which was significant to obtain a large mechanical coupling with the magnetization, was dominantly excited in the 800-MHz-SAW device.

KW - Magnetization dynamics

KW - Magnetostriction

KW - Surface acoustic wave

UR - http://www.scopus.com/inward/record.url?scp=85021769637&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85021769637&partnerID=8YFLogxK

U2 - 10.1541/ieejfms.137.386

DO - 10.1541/ieejfms.137.386

M3 - Article

AN - SCOPUS:85021769637

VL - 137

SP - 386

EP - 391

JO - IEEJ Transactions on Fundamentals and Materials

JF - IEEJ Transactions on Fundamentals and Materials

SN - 0385-4205

IS - 7

ER -