Propagating spin waves in nanometer-thick yttrium iron garnet films: Dependence on wave vector, magnetic field strength, and angle

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Propagating spin waves in nanometer-thick yttrium iron garnet films : Dependence on wave vector, magnetic field strength, and angle. / Qin, Huajun; Hämäläinen, Sampo J.; Arjas, Kristian; Witteveen, Jorn; Van Dijken, Sebastiaan.

julkaisussa: Physical Review B, Vuosikerta 98, Nro 22, 224422, 26.12.2018, s. 1-8.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Bibtex - Lataa

@article{95454ed8f2f648cc9b60c677c9a3d8a8,
title = "Propagating spin waves in nanometer-thick yttrium iron garnet films: Dependence on wave vector, magnetic field strength, and angle",
abstract = "We present a comprehensive investigation of propagating spin waves in nanometer-thick yttrium iron garnet (YIG) films. We use broadband spin-wave spectroscopy with integrated coplanar waveguides (CPWs) and antennas on top of continuous and patterned YIG films to characterize spin waves with wave vectors up to 10 rad/μm. All films are grown by pulsed laser deposition. From spin-wave transmission spectra, parameters such as the Gilbert damping constant, spin-wave dispersion relation, group velocity, relaxation time, and decay length are derived, and their dependence on magnetic bias field strength and angle is systematically gauged. For a 40-nm-thick YIG film, we obtain a damping constant of 3.5×10-4 and a maximum decay length of 1.2 mm. We show a strong variation of spin-wave parameters with wave vector, magnetic field strength, and field angle. The properties of spin waves with small wave vectors change considerably with in-plane magnetic bias field up to 30 mT and magnetic field angle beyond 20?. We also compare broadband spin-wave spectroscopy measurements on 35-nm-thick YIG films with integrated CPWs and antennas and demonstrate that both methods provide similar spin-wave parameters.",
author = "Huajun Qin and H{\"a}m{\"a}l{\"a}inen, {Sampo J.} and Kristian Arjas and Jorn Witteveen and {Van Dijken}, Sebastiaan",
note = "| openaire: EC/H2020/812841/EU//POWERSPIN",
year = "2018",
month = "12",
day = "26",
doi = "10.1103/PhysRevB.98.224422",
language = "English",
volume = "98",
pages = "1--8",
journal = "Physical Review B (Condensed Matter and Materials Physics)",
issn = "2469-9950",
publisher = "American Physical Society",
number = "22",

}

RIS - Lataa

TY - JOUR

T1 - Propagating spin waves in nanometer-thick yttrium iron garnet films

T2 - Dependence on wave vector, magnetic field strength, and angle

AU - Qin, Huajun

AU - Hämäläinen, Sampo J.

AU - Arjas, Kristian

AU - Witteveen, Jorn

AU - Van Dijken, Sebastiaan

N1 - | openaire: EC/H2020/812841/EU//POWERSPIN

PY - 2018/12/26

Y1 - 2018/12/26

N2 - We present a comprehensive investigation of propagating spin waves in nanometer-thick yttrium iron garnet (YIG) films. We use broadband spin-wave spectroscopy with integrated coplanar waveguides (CPWs) and antennas on top of continuous and patterned YIG films to characterize spin waves with wave vectors up to 10 rad/μm. All films are grown by pulsed laser deposition. From spin-wave transmission spectra, parameters such as the Gilbert damping constant, spin-wave dispersion relation, group velocity, relaxation time, and decay length are derived, and their dependence on magnetic bias field strength and angle is systematically gauged. For a 40-nm-thick YIG film, we obtain a damping constant of 3.5×10-4 and a maximum decay length of 1.2 mm. We show a strong variation of spin-wave parameters with wave vector, magnetic field strength, and field angle. The properties of spin waves with small wave vectors change considerably with in-plane magnetic bias field up to 30 mT and magnetic field angle beyond 20?. We also compare broadband spin-wave spectroscopy measurements on 35-nm-thick YIG films with integrated CPWs and antennas and demonstrate that both methods provide similar spin-wave parameters.

AB - We present a comprehensive investigation of propagating spin waves in nanometer-thick yttrium iron garnet (YIG) films. We use broadband spin-wave spectroscopy with integrated coplanar waveguides (CPWs) and antennas on top of continuous and patterned YIG films to characterize spin waves with wave vectors up to 10 rad/μm. All films are grown by pulsed laser deposition. From spin-wave transmission spectra, parameters such as the Gilbert damping constant, spin-wave dispersion relation, group velocity, relaxation time, and decay length are derived, and their dependence on magnetic bias field strength and angle is systematically gauged. For a 40-nm-thick YIG film, we obtain a damping constant of 3.5×10-4 and a maximum decay length of 1.2 mm. We show a strong variation of spin-wave parameters with wave vector, magnetic field strength, and field angle. The properties of spin waves with small wave vectors change considerably with in-plane magnetic bias field up to 30 mT and magnetic field angle beyond 20?. We also compare broadband spin-wave spectroscopy measurements on 35-nm-thick YIG films with integrated CPWs and antennas and demonstrate that both methods provide similar spin-wave parameters.

UR - http://www.scopus.com/inward/record.url?scp=85059504670&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.98.224422

DO - 10.1103/PhysRevB.98.224422

M3 - Article

VL - 98

SP - 1

EP - 8

JO - Physical Review B (Condensed Matter and Materials Physics)

JF - Physical Review B (Condensed Matter and Materials Physics)

SN - 2469-9950

IS - 22

M1 - 224422

ER -

ID: 31263369