Temperature dependent intrinsic Gilbert damping in magnetostrictive FeCoSiB thin film

A low Gilbert damping factor is crucial for emerging magneto-acoustic devices. In current work, angle-dependent and temperature-dependent Gilbert damping of magnetostrictive FeCoSiB thin films have been investigated using electron spin resonance (ESR) and vector network analyzer ferromagnetic resona...

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Bibliographic Details
Published inAIP advances Vol. 13; no. 2; pp. 025003 - 025003-5
Main Authors Hu, Wenbin, Zhang, Lei, Jin, Lichuan, Bai, Feiming
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.02.2023
AIP Publishing LLC
Subjects
Damping
Electron paramagnetic resonance
Electron spin
Ferromagnetic resonance
Ferromagnetism
Magnetostriction
Network analysers
Room temperature
Spin resonance
Temperature dependence
Thin films
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Summary:A low Gilbert damping factor is crucial for emerging magneto-acoustic devices. In current work, angle-dependent and temperature-dependent Gilbert damping of magnetostrictive FeCoSiB thin films have been investigated using electron spin resonance (ESR) and vector network analyzer ferromagnetic resonance (VNA-FMR) techniques, respectively. A very low Gilbert damping factor ∼0.0038 was measured with in-plane magnetic fields at room temperature. Temperature-dependent VNA-FMR results between 10 K and 300 K exhibit a conductivity-like damping feature, which can be attributed to the spin-orbital coupling dominantly controlled by the intraband scattering. Our results clearly indicate that highly magnetostrictive or piezomagnetic film does not necessarily have a high intrinsic damping factor.
ISSN:2158-3226
2158-3226
DOI:10.1063/9.0000418