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Coupling of Lamb Waves and Spin Waves in Multiferroic Heterostructures
- Source :
- Journal of Microelectromechanical Systems. 29:1121-1123
- Publication Year :
- 2020
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2020.
-
Abstract
- In this work, we investigate magneto-acoustic attenuation in thin film multiferroic Lamb wave delay lines. By leveraging magneto-acoustic interactions, multiferroics have potential to realize passive chip-scale alternatives to bulky ferrite devices. For the first time, magnetic field dependence of magneto-acoustic interactions in multiferroic Lamb wave devices is characterized. Multiferroic heterostructures of aluminum nitride and cobalt iron boron are fabricated into Lamb wave delay lines operating at 7.492 GHz to study the effect of strain nonuniformity on the multiferroic coupling. The attenuation of the Lamb waves is characterized as a function of the magnitude and angle of an applied in-plane bias magnetic field. It is found that the bias magnitude for peak attenuation is a strong function of angle, indicating that it is due to coupling between the Lamb waves and spin wave modes. This is in contrast with current models of attenuation in multiferroic SAW delay lines, where the uniform surface strains couple to ferromagnetic resonance, which has no angular dependence on the in-plane bias field magnitude. These results are the first steps towards passive chip-scale alternatives to ferrite devices utilizing Lamb wave devices, which have better coupling and scalability than their SAW counterparts. [2020-0114]
- Subjects :
- Materials science
Condensed matter physics
Mechanical Engineering
Attenuation
020206 networking & telecommunications
Magnetostriction
02 engineering and technology
021001 nanoscience & nanotechnology
Ferromagnetic resonance
Magnetic field
Condensed Matter::Materials Science
Lamb waves
Spin wave
0202 electrical engineering, electronic engineering, information engineering
Ferrite (magnet)
Multiferroics
Physics::Atomic Physics
Electrical and Electronic Engineering
0210 nano-technology
Subjects
Details
- ISSN :
- 19410158 and 10577157
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- Journal of Microelectromechanical Systems
- Accession number :
- edsair.doi...........d35f0569999de797c3ec31dafdb461a7