Wide-range frequency control in magnetoacoustic resonator

Moshkin, Vladimir; Preobrazhensky, Vladimir; Pernod, Philippe

Document type :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1109/TUFFC.2020.2993405

PMID :

32396079

Title :

Wide-range frequency control in magnetoacoustic resonator

Author(s) :

Moshkin, Vladimir [Auteur]
Russian Technological University [MIREA]
Preobrazhensky, Vladimir [Auteur]
the Russian Academy of Sciences [Moscow, Russia] [RAS]
Pernod, Philippe [Auteur]

Acoustique Impulsionnelle & Magnéto-Acoustique Non linéaire - Fluides, Interfaces Liquides & Micro-Systèmes - IEMN [AIMAN-FILMS - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

Pages :

1957-1959

Publisher :

Institute of Electrical and Electronics Engineers

Publication date :

2020-09

ISSN :

0885-3010

English keyword(s) :

Discontinuity
eigenfrequency
magnetic control
measurements
numerical simulations

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

Acoustic resonators based on antiferromagnetic crystals of "easy plane" type, like alpha-Fe2O3 or FeBO3, are of interest for applications in magnetoacoustic sensors of electrical and mechanical values because of high ...
Show more >Acoustic resonators based on antiferromagnetic crystals of "easy plane" type, like alpha-Fe2O3 or FeBO3, are of interest for applications in magnetoacoustic sensors of electrical and mechanical values because of high sensitivity of their resonance frequency to variations of external magnetic field or mechanical stress. One of the requirements for magnetic control of resonators is a single-value dependence of resonance frequency on magnetic field strength. This requirement is violated when the geometry of resonator allows for crossover of acoustic modes in the range of magnetic field variation. Designing of resonators with frequency control in a wide range requires knowledge of field-dependent acoustic parameters of the crystals and appropriate method for calculation of the resonator eigenfrequencies. In this letter, we present the complete set of acoustic parameters deduced for alpha-Fe2O3 single crystal that are used for simulation of acoustic mode structures and spectra of vibrations in disk resonator. The results of simulation using COMSOL Multiphysics software are compared with experimental measurements carried out on two resonators of different ratios of sizes that illustrating continuous and discontinuous dependence of the resonance frequency on themagnetic field. Prevention of discontinuity by correction of the resonator geometry is demonstrated.Show less >

Language :

Anglais

Popular science :

Non

Collections :

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

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