Effect of Magnetic Anisotropy on Magnetoelastic Waves in Ni/LiNbO3 Hybrid Device
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908517637554176 |
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| author | Yu, Minwoo Song, Moojune Kang, Minseok You, Mujin Hwang, Yunyoung Park, Albert Min Gyu Park, Byong-Guk Kim, Kab-Jin Suh, Junho |
| author_facet | Yu, Minwoo Song, Moojune Kang, Minseok You, Mujin Hwang, Yunyoung Park, Albert Min Gyu Park, Byong-Guk Kim, Kab-Jin Suh, Junho |
| contents | We study the effects of magnetic anisotropy and crystalline axes in surface acoustic waves (SAWs) driven magnetic resonances of Ni/LiNbO3 hybrid devices. SAW absorption from the interaction with magnons in Ni displays a strong anisotropic dependence on the direction of the applied in-plane magnetic field. Magnetic anisotropy is further investigated by magneto-optical Kerr effect measurements to show both uniaxial and biaxial anisotropy components in Ni films on LiNbO3. By introducing a dipolar interaction term in addition to the anisotropies, we successfully explain the anisotropic SAW absorption in our devices. These findings show the importance of substrate-induced anisotropy and long-range dipolar effects in SAW-magnons hybrid devices and indicate future directions for optimizing these spin-acoustic devices through comprehensive anisotropy engineering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_03254 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Effect of Magnetic Anisotropy on Magnetoelastic Waves in Ni/LiNbO3 Hybrid Device Yu, Minwoo Song, Moojune Kang, Minseok You, Mujin Hwang, Yunyoung Park, Albert Min Gyu Park, Byong-Guk Kim, Kab-Jin Suh, Junho Mesoscale and Nanoscale Physics We study the effects of magnetic anisotropy and crystalline axes in surface acoustic waves (SAWs) driven magnetic resonances of Ni/LiNbO3 hybrid devices. SAW absorption from the interaction with magnons in Ni displays a strong anisotropic dependence on the direction of the applied in-plane magnetic field. Magnetic anisotropy is further investigated by magneto-optical Kerr effect measurements to show both uniaxial and biaxial anisotropy components in Ni films on LiNbO3. By introducing a dipolar interaction term in addition to the anisotropies, we successfully explain the anisotropic SAW absorption in our devices. These findings show the importance of substrate-induced anisotropy and long-range dipolar effects in SAW-magnons hybrid devices and indicate future directions for optimizing these spin-acoustic devices through comprehensive anisotropy engineering. |
| title | Effect of Magnetic Anisotropy on Magnetoelastic Waves in Ni/LiNbO3 Hybrid Device |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2509.03254 |