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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.01615 |
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| _version_ | 1866909626315833344 |
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| author | Takahashi, Ryunosuke Guen, Yann Le Nakata, Suguru Igarashi, Junta Hohlfeld, Julius Malinowski, Grégory Lingling, Xie Daisuke, Kan Shimakawa, Yuichi Mangin, Stéphane Wadati, Hiroki |
| author_facet | Takahashi, Ryunosuke Guen, Yann Le Nakata, Suguru Igarashi, Junta Hohlfeld, Julius Malinowski, Grégory Lingling, Xie Daisuke, Kan Shimakawa, Yuichi Mangin, Stéphane Wadati, Hiroki |
| contents | All-optical switching (AOS) involves manipulating magnetization using only pulsed laser, presenting a promising approach for next-generation magnetic recording devices. NiCo2O4 (NCO) thin films, a rare-earth-free ferrimagnetic oxide, exhibit a high Curie temperature and strong perpendicular magnetic anisotropy. This study demonstrates AOS in NCO thin films at room temperature using long-duration laser pulses and high repetition rates. Unlike previous findings, the AOS phenomena we report here are helicity-dependent and observable with an ultrashort pulsed laser. Consequently, two distinct types of AOS can be observed in a single NCO thin film, contingent on the characteristics of the laser pulses and temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_01615 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | All-optical helicity-dependent switching in NiCo$_2$O$_4$ thin films Takahashi, Ryunosuke Guen, Yann Le Nakata, Suguru Igarashi, Junta Hohlfeld, Julius Malinowski, Grégory Lingling, Xie Daisuke, Kan Shimakawa, Yuichi Mangin, Stéphane Wadati, Hiroki Materials Science All-optical switching (AOS) involves manipulating magnetization using only pulsed laser, presenting a promising approach for next-generation magnetic recording devices. NiCo2O4 (NCO) thin films, a rare-earth-free ferrimagnetic oxide, exhibit a high Curie temperature and strong perpendicular magnetic anisotropy. This study demonstrates AOS in NCO thin films at room temperature using long-duration laser pulses and high repetition rates. Unlike previous findings, the AOS phenomena we report here are helicity-dependent and observable with an ultrashort pulsed laser. Consequently, two distinct types of AOS can be observed in a single NCO thin film, contingent on the characteristics of the laser pulses and temperature. |
| title | All-optical helicity-dependent switching in NiCo$_2$O$_4$ thin films |
| topic | Materials Science |
| url | https://arxiv.org/abs/2409.01615 |