High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si
Films of polycrystalline terbium iron garnet (TbIG), cerium-substituted TbIG (CeTbIG), and bismuth-substituted TbIG (BiTbIG) are grown on Si substrates by pulsed laser deposition. The films grow under tensile strain due to thermal mismatch with the Si substrate, resulting in a dominant magnetoelasti...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022
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| Online Access: | https://hdl.handle.net/1721.1/140414 |
| _version_ | 1826195287099572224 |
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| author | Fakhrul, Takian Tazlaru, Stana Khurana, Bharat Beran, Lukáš Bauer, Jackson Vančík, Michal Marchese, Ariane Tsotsos, Ekaterina Kučera, Miroslav Zhang, Yan Veis, Martin Ross, Caroline A. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Fakhrul, Takian Tazlaru, Stana Khurana, Bharat Beran, Lukáš Bauer, Jackson Vančík, Michal Marchese, Ariane Tsotsos, Ekaterina Kučera, Miroslav Zhang, Yan Veis, Martin Ross, Caroline A. |
| author_sort | Fakhrul, Takian |
| collection | MIT |
| description | Films of polycrystalline terbium iron garnet (TbIG), cerium-substituted TbIG (CeTbIG), and bismuth-substituted TbIG (BiTbIG) are grown on Si substrates by pulsed laser deposition. The films grow under tensile strain due to thermal mismatch with the Si substrate, resulting in a dominant magnetoelastic anisotropy which, combined with shape anisotropy, leads to in-plane magnetization. TbIG has a compensation temperature of 253 K which is reduced by substitution of Ce and Bi. The Faraday rotation at 1550 nm of the TbIG, Ce0.36TbIG, and Bi0.03TbIG films is 5400 ± 600° cm−1, 4500 ± 100° cm–1, and 6200 ± 300° cm−1, respectively, while Ce0.36TbIG and Bi0.03TbIG exhibit lower optical absorption than TbIG, attributed to a reduction in Fe2+ and Tb4+ absorption pathways. The high Faraday rotation of the films, and in particular the high magneto-optical figure of merit of the Bi0.03TbIG of 720° dB−1 at 1550 nm, make these polycrystalline films valuable for applications in integrated photonics. |
| first_indexed | 2024-09-23T10:10:20Z |
| format | Article |
| id | mit-1721.1/140414 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:10:20Z |
| publishDate | 2022 |
| publisher | Wiley |
| record_format | dspace |
| spelling | mit-1721.1/1404142024-06-06T19:38:36Z High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si Fakhrul, Takian Tazlaru, Stana Khurana, Bharat Beran, Lukáš Bauer, Jackson Vančík, Michal Marchese, Ariane Tsotsos, Ekaterina Kučera, Miroslav Zhang, Yan Veis, Martin Ross, Caroline A. Massachusetts Institute of Technology. Department of Materials Science and Engineering Films of polycrystalline terbium iron garnet (TbIG), cerium-substituted TbIG (CeTbIG), and bismuth-substituted TbIG (BiTbIG) are grown on Si substrates by pulsed laser deposition. The films grow under tensile strain due to thermal mismatch with the Si substrate, resulting in a dominant magnetoelastic anisotropy which, combined with shape anisotropy, leads to in-plane magnetization. TbIG has a compensation temperature of 253 K which is reduced by substitution of Ce and Bi. The Faraday rotation at 1550 nm of the TbIG, Ce0.36TbIG, and Bi0.03TbIG films is 5400 ± 600° cm−1, 4500 ± 100° cm–1, and 6200 ± 300° cm−1, respectively, while Ce0.36TbIG and Bi0.03TbIG exhibit lower optical absorption than TbIG, attributed to a reduction in Fe2+ and Tb4+ absorption pathways. The high Faraday rotation of the films, and in particular the high magneto-optical figure of merit of the Bi0.03TbIG of 720° dB−1 at 1550 nm, make these polycrystalline films valuable for applications in integrated photonics. 2022-02-16T16:51:43Z 2022-02-16T16:51:43Z 2021-05-31 Article http://purl.org/eprint/type/JournalArticle 2195-1071 2195-1071 https://hdl.handle.net/1721.1/140414 Fakhrul, T., Tazlaru, S., Khurana, B., Beran, L., Bauer, J., Vančík, M., Marchese, A., Tsotsos, E., Kučera, M., Zhang, Y., Veis, M., Ross, C. A., High Figure of Merit Magneto-Optical Ce- and Bi-Substituted Terbium Iron Garnet Films Integrated on Si. Adv. Optical Mater. 2021, 9, 2100512. en http://dx.doi.org/10.1002/adom.202100512 Advanced Optical Materials Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Wiley Wiley |
| spellingShingle | Fakhrul, Takian Tazlaru, Stana Khurana, Bharat Beran, Lukáš Bauer, Jackson Vančík, Michal Marchese, Ariane Tsotsos, Ekaterina Kučera, Miroslav Zhang, Yan Veis, Martin Ross, Caroline A. High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si |
| title | High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si |
| title_full | High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si |
| title_fullStr | High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si |
| title_full_unstemmed | High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si |
| title_short | High Figure of Merit Magneto‐Optical Ce‐ and Bi‐Substituted Terbium Iron Garnet Films Integrated on Si |
| title_sort | high figure of merit magneto optical ce and bi substituted terbium iron garnet films integrated on si |
| url | https://hdl.handle.net/1721.1/140414 |
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