Gyrator Based on Magneto-elastic Coupling at a Ferromagnetic/Piezoelectric Interface
Abstract A gyrator is a non-reciprocal two port device with 180° phase shift in the transmissions between two ports. Though electromagnetic realizations of gyrators have been well studied, devices based on other forms of interaction are relatively unexplored. Here we demonstrate a device in which si...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2017-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-00960-9 |
| _version_ | 1818851114889510912 |
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| author | Swapnil Bhuktare Arnab Bose Hanuman Singh Ashwin A. Tulapurkar |
| author_facet | Swapnil Bhuktare Arnab Bose Hanuman Singh Ashwin A. Tulapurkar |
| author_sort | Swapnil Bhuktare |
| collection | DOAJ |
| description | Abstract A gyrator is a non-reciprocal two port device with 180° phase shift in the transmissions between two ports. Though electromagnetic realizations of gyrators have been well studied, devices based on other forms of interaction are relatively unexplored. Here we demonstrate a device in which signal is transmitted via magneto-elastic coupling, can function as a gyrator. The device is built on a piezoelectric substrate: one port of this device has interdigital transducers (IDTs) and the other port has a periodic array of nickel/gold lines. When the magnetizations of Ni lines are excited into precession by magnetic field generated by passing oscillating current through the gold lines, they emit phonons in the form of surface acoustic waves (SAW) due to the magneto-elastic coupling between Ni and substrate. The emitted SAW can be detected at the other end by the IDTs. Conversely, when SAW is incident on Ni lines from IDTs, the magnetization undergoes precession and can be inductively detected by Au lines. The broken time reversal symmetry of the system due to the presence of ferromagnet gives rise to the non-reciprocal transmission between the two ports. These devices could function as novel building blocks for phonon based information processing. |
| first_indexed | 2024-12-19T06:59:53Z |
| format | Article |
| id | doaj.art-30cad9c0cae64761a2dba24818d0d2d5 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T06:59:53Z |
| publishDate | 2017-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-30cad9c0cae64761a2dba24818d0d2d52022-12-21T20:31:27ZengNature PortfolioScientific Reports2045-23222017-04-01711610.1038/s41598-017-00960-9Gyrator Based on Magneto-elastic Coupling at a Ferromagnetic/Piezoelectric InterfaceSwapnil Bhuktare0Arnab Bose1Hanuman Singh2Ashwin A. Tulapurkar3Department of Electrical Engineering, Indian Institute of Technology-BombayDepartment of Electrical Engineering, Indian Institute of Technology-BombayDepartment of Electrical Engineering, Indian Institute of Technology-BombayDepartment of Electrical Engineering, Indian Institute of Technology-BombayAbstract A gyrator is a non-reciprocal two port device with 180° phase shift in the transmissions between two ports. Though electromagnetic realizations of gyrators have been well studied, devices based on other forms of interaction are relatively unexplored. Here we demonstrate a device in which signal is transmitted via magneto-elastic coupling, can function as a gyrator. The device is built on a piezoelectric substrate: one port of this device has interdigital transducers (IDTs) and the other port has a periodic array of nickel/gold lines. When the magnetizations of Ni lines are excited into precession by magnetic field generated by passing oscillating current through the gold lines, they emit phonons in the form of surface acoustic waves (SAW) due to the magneto-elastic coupling between Ni and substrate. The emitted SAW can be detected at the other end by the IDTs. Conversely, when SAW is incident on Ni lines from IDTs, the magnetization undergoes precession and can be inductively detected by Au lines. The broken time reversal symmetry of the system due to the presence of ferromagnet gives rise to the non-reciprocal transmission between the two ports. These devices could function as novel building blocks for phonon based information processing.https://doi.org/10.1038/s41598-017-00960-9 |
| spellingShingle | Swapnil Bhuktare Arnab Bose Hanuman Singh Ashwin A. Tulapurkar Gyrator Based on Magneto-elastic Coupling at a Ferromagnetic/Piezoelectric Interface Scientific Reports |
| title | Gyrator Based on Magneto-elastic Coupling at a Ferromagnetic/Piezoelectric Interface |
| title_full | Gyrator Based on Magneto-elastic Coupling at a Ferromagnetic/Piezoelectric Interface |
| title_fullStr | Gyrator Based on Magneto-elastic Coupling at a Ferromagnetic/Piezoelectric Interface |
| title_full_unstemmed | Gyrator Based on Magneto-elastic Coupling at a Ferromagnetic/Piezoelectric Interface |
| title_short | Gyrator Based on Magneto-elastic Coupling at a Ferromagnetic/Piezoelectric Interface |
| title_sort | gyrator based on magneto elastic coupling at a ferromagnetic piezoelectric interface |
| url | https://doi.org/10.1038/s41598-017-00960-9 |
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