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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2504.17793 |
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| _version_ | 1866910918558875648 |
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| author | Gubinelli, Walter Karaca, Hasan Tetro, Ryan Azad, Sariha N. Feng, Philip X. -L. Colombo, Luca Rinaldi, Matteo |
| author_facet | Gubinelli, Walter Karaca, Hasan Tetro, Ryan Azad, Sariha N. Feng, Philip X. -L. Colombo, Luca Rinaldi, Matteo |
| contents | In this paper, fundamental shear-horizontal SH0 mode Leaky Surface Acoustic Wave (LSAW) resonators on X-cut lithium niobate leveraging dense and robust electrodes such as gold and tungsten are demonstrated for extreme temperature operation in harsh environments. A novel post-processing approach based on in-band spurious mode tracking is introduced to enable reliable characterization under extreme parasitic loading during testing. Devices exhibit stable performance throughout multiple thermal cycles up to 1000 $^\circ$C, with an extrapolated electromechanical coupling coefficient kt2 = 25% and loaded quality factor Qp = 12 at 1000 $^\circ$C for tungsten devices, and kt2 = 17%, Qp = 100 at 900 $^\circ$C for gold devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_17793 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Lithium niobate acoustic resonators operating beyond 900 $^\circ$C Gubinelli, Walter Karaca, Hasan Tetro, Ryan Azad, Sariha N. Feng, Philip X. -L. Colombo, Luca Rinaldi, Matteo Applied Physics In this paper, fundamental shear-horizontal SH0 mode Leaky Surface Acoustic Wave (LSAW) resonators on X-cut lithium niobate leveraging dense and robust electrodes such as gold and tungsten are demonstrated for extreme temperature operation in harsh environments. A novel post-processing approach based on in-band spurious mode tracking is introduced to enable reliable characterization under extreme parasitic loading during testing. Devices exhibit stable performance throughout multiple thermal cycles up to 1000 $^\circ$C, with an extrapolated electromechanical coupling coefficient kt2 = 25% and loaded quality factor Qp = 12 at 1000 $^\circ$C for tungsten devices, and kt2 = 17%, Qp = 100 at 900 $^\circ$C for gold devices. |
| title | Lithium niobate acoustic resonators operating beyond 900 $^\circ$C |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2504.17793 |