Surface acoustic wave coupled to magnetic resonance on multiferroic CuB2 O4

R. Sasaki; Y. Nii; Y. Onose

doi:10.1103/PhysRevB.99.014418

Surface acoustic wave coupled to magnetic resonance on multiferroic CuB2 O4

R. Sasaki, Y. Nii, Y. Onose

Materials Design Division

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We observed surface acoustic wave (SAW) propagation on a multiferroic material CuB2O4 with use of two interdigital transducers (IDTs). The period of IDT fingers is as short as 1.6 μm so that the frequency of SAW is 3 GHz, which is comparable with that of magnetic resonance. In the antiferromagnetic phase, the SAW excitation intensity varied with the magnitude and direction of the magnetic field, owing to the dynamical coupling between SAWs and antiferromagnetic resonance of CuB2O4. The microscopic mechanism is discussed based on the symmetrically allowed magnetoelastic coupling.

Original language	English
Article number	014418
Journal	Physical Review B
Volume	99
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.99.014418
Publication status	Published - 2019 Jan 18

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Surface acoustic wave coupled to magnetic resonance on multiferroic CuB2 O4",

abstract = "We observed surface acoustic wave (SAW) propagation on a multiferroic material CuB2O4 with use of two interdigital transducers (IDTs). The period of IDT fingers is as short as 1.6 μm so that the frequency of SAW is 3 GHz, which is comparable with that of magnetic resonance. In the antiferromagnetic phase, the SAW excitation intensity varied with the magnitude and direction of the magnetic field, owing to the dynamical coupling between SAWs and antiferromagnetic resonance of CuB2O4. The microscopic mechanism is discussed based on the symmetrically allowed magnetoelastic coupling.",

author = "R. Sasaki and Y. Nii and Y. Onose",

note = "Funding Information: This work was supported in part by the Grant-in-Aid for Scientific Research (Grants No. 17H05176 and No. 16H04008) and for Young Scientists (Grant No. 18K13494) from the Japan Society for the Promotion of Science and the Noguchi Institute. R.S. was supported by the Grant-in-Aid for JSPS Research Fellow (Grant No. 18J12130). ",

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AU - Sasaki, R.

AU - Nii, Y.

AU - Onose, Y.

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PY - 2019/1/18

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N2 - We observed surface acoustic wave (SAW) propagation on a multiferroic material CuB2O4 with use of two interdigital transducers (IDTs). The period of IDT fingers is as short as 1.6 μm so that the frequency of SAW is 3 GHz, which is comparable with that of magnetic resonance. In the antiferromagnetic phase, the SAW excitation intensity varied with the magnitude and direction of the magnetic field, owing to the dynamical coupling between SAWs and antiferromagnetic resonance of CuB2O4. The microscopic mechanism is discussed based on the symmetrically allowed magnetoelastic coupling.

AB - We observed surface acoustic wave (SAW) propagation on a multiferroic material CuB2O4 with use of two interdigital transducers (IDTs). The period of IDT fingers is as short as 1.6 μm so that the frequency of SAW is 3 GHz, which is comparable with that of magnetic resonance. In the antiferromagnetic phase, the SAW excitation intensity varied with the magnitude and direction of the magnetic field, owing to the dynamical coupling between SAWs and antiferromagnetic resonance of CuB2O4. The microscopic mechanism is discussed based on the symmetrically allowed magnetoelastic coupling.

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