Influence of Sputtered ZnO and Al:ZnO Top Layers on Magneto-Optic Responses of Yttrium Iron Garnet Films
Zinc oxide (ZnO) is a promising material for combining with magneto-optic (MO) materials because it can propagate stable exciton-polaritons, with velocities considerably lower than that of photons in a vacuum. This study investigated the influence of sputtered ZnO and Al:ZnO top layers on MO respons...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2018-10-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2073-4352/8/10/396 |
| _version_ | 1798026700649398272 |
|---|---|
| author | Shinichiro Mito Satsuki Kikuchi Yasutoshi Ito Nana Ota Mitsuteru Inoue |
| author_facet | Shinichiro Mito Satsuki Kikuchi Yasutoshi Ito Nana Ota Mitsuteru Inoue |
| author_sort | Shinichiro Mito |
| collection | DOAJ |
| description | Zinc oxide (ZnO) is a promising material for combining with magneto-optic (MO) materials because it can propagate stable exciton-polaritons, with velocities considerably lower than that of photons in a vacuum. This study investigated the influence of sputtered ZnO and Al:ZnO top layers on MO responses of a bismuth-substituted yttrium iron garnet (Bi:YIG) film. The ZnO top layer modulated the Faraday rotation and magnetic circular dichroism (MCD) of the Bi:YIG around the exciton resonance wavelength of ZnO at 369 nm. Furthermore, Al-substituted ZnO, which is a conductive ZnO, also changed the MO effects around the exciton resonance wavelength. These results imply that the exciton-polaritons in ZnO affect the MO interaction, because of their considerably low group velocity. The results suggest potential for controlling the MO response via excitons. |
| first_indexed | 2024-04-11T18:39:38Z |
| format | Article |
| id | doaj.art-509b35ef18d44e87b9daaaddca27f448 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T18:39:38Z |
| publishDate | 2018-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-509b35ef18d44e87b9daaaddca27f4482022-12-22T04:09:03ZengMDPI AGCrystals2073-43522018-10-0181039610.3390/cryst8100396cryst8100396Influence of Sputtered ZnO and Al:ZnO Top Layers on Magneto-Optic Responses of Yttrium Iron Garnet FilmsShinichiro Mito0Satsuki Kikuchi1Yasutoshi Ito2Nana Ota3Mitsuteru Inoue4Department of Electronic Engineering, National Institute of Technology, Tokyo College, Hachioji, Tokyo 193-1997, JapanDepartment of Electronic Engineering, National Institute of Technology, Tokyo College, Hachioji, Tokyo 193-1997, JapanDepartment of Electronic Engineering, National Institute of Technology, Tokyo College, Hachioji, Tokyo 193-1997, JapanDepartment of Electronic Engineering, National Institute of Technology, Tokyo College, Hachioji, Tokyo 193-1997, JapanDepartment of Electrical and Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8580, JapanZinc oxide (ZnO) is a promising material for combining with magneto-optic (MO) materials because it can propagate stable exciton-polaritons, with velocities considerably lower than that of photons in a vacuum. This study investigated the influence of sputtered ZnO and Al:ZnO top layers on MO responses of a bismuth-substituted yttrium iron garnet (Bi:YIG) film. The ZnO top layer modulated the Faraday rotation and magnetic circular dichroism (MCD) of the Bi:YIG around the exciton resonance wavelength of ZnO at 369 nm. Furthermore, Al-substituted ZnO, which is a conductive ZnO, also changed the MO effects around the exciton resonance wavelength. These results imply that the exciton-polaritons in ZnO affect the MO interaction, because of their considerably low group velocity. The results suggest potential for controlling the MO response via excitons.http://www.mdpi.com/2073-4352/8/10/396magneto-optical effectmagnetic garnetzinc oxideexcitonpolariton |
| spellingShingle | Shinichiro Mito Satsuki Kikuchi Yasutoshi Ito Nana Ota Mitsuteru Inoue Influence of Sputtered ZnO and Al:ZnO Top Layers on Magneto-Optic Responses of Yttrium Iron Garnet Films Crystals magneto-optical effect magnetic garnet zinc oxide exciton polariton |
| title | Influence of Sputtered ZnO and Al:ZnO Top Layers on Magneto-Optic Responses of Yttrium Iron Garnet Films |
| title_full | Influence of Sputtered ZnO and Al:ZnO Top Layers on Magneto-Optic Responses of Yttrium Iron Garnet Films |
| title_fullStr | Influence of Sputtered ZnO and Al:ZnO Top Layers on Magneto-Optic Responses of Yttrium Iron Garnet Films |
| title_full_unstemmed | Influence of Sputtered ZnO and Al:ZnO Top Layers on Magneto-Optic Responses of Yttrium Iron Garnet Films |
| title_short | Influence of Sputtered ZnO and Al:ZnO Top Layers on Magneto-Optic Responses of Yttrium Iron Garnet Films |
| title_sort | influence of sputtered zno and al zno top layers on magneto optic responses of yttrium iron garnet films |
| topic | magneto-optical effect magnetic garnet zinc oxide exciton polariton |
| url | http://www.mdpi.com/2073-4352/8/10/396 |
| work_keys_str_mv | AT shinichiromito influenceofsputteredznoandalznotoplayersonmagnetoopticresponsesofyttriumirongarnetfilms AT satsukikikuchi influenceofsputteredznoandalznotoplayersonmagnetoopticresponsesofyttriumirongarnetfilms AT yasutoshiito influenceofsputteredznoandalznotoplayersonmagnetoopticresponsesofyttriumirongarnetfilms AT nanaota influenceofsputteredznoandalznotoplayersonmagnetoopticresponsesofyttriumirongarnetfilms AT mitsuteruinoue influenceofsputteredznoandalznotoplayersonmagnetoopticresponsesofyttriumirongarnetfilms |