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Photoswitchable Faraday effect in EuS-Au nanosystems
| Title: | Photoswitchable Faraday effect in EuS-Au nanosystems |
| Authors: | Kawashima, Akira Browse this author | | Nakanishi, Takayuki Browse this author →KAKEN DB | | Kitagawa, Yuichi Browse this author | | Fushimi, Koji Browse this author →KAKEN DB | | Hasegawa, Yasuchika Browse this author →KAKEN DB |
| Keywords: | europium | | gold | | magnetic circular dichroism | | nanoparticles |
| Issue Date: | Jan-2016 |
| Publisher: | Wiley-Blackwell |
| Journal Title: | Physica Status Solidi A applications and materials science |
| Volume: | 213 |
| Issue: | 1 |
| Start Page: | 178 |
| End Page: | 182 |
| Publisher DOI: | 10.1002/pssa.201532526 |
| Abstract: | Effective photoswitchable europium sulfide nanocrystals with gold nanoparticles using dithiol (DDT: 1,10-decanedithiol) joint molecules, EuS-Au nanosystems, are demonstrated. The TEM image indicates the formation of EuS-Au nanosystems composed of cube-shaped EuS nanocrystals and spherical Au nanoparticles. Under visible-light irradiation, a drastic change of absorption band of EuS-Au nanosystems at around 600 nm was observed. The Faraday effects of EuS-Au nanosystems were estimated using magnetic circular dichroism (MCD) measurements. The effective change of the MCD spectra of EuS-Au nanosystems under visible-light irradiation was successfully observed at around 670 nm for the first time. The effective reversible changes in MCD spectra with the alternative irradiation cycles of visible light (>440 nm) and dark are also presented. The decrease rate of rotation angle at 670 nm of EuS-Au nanosystems is larger than that of absorbance. These results indicate that the effective change of MCD spectra of EuS-Au nanosystems would be dominated not only by a drastic change of absorption band related to enhanced LSPR of Au nanoparticles but also by specific interaction between EuS and Au in nanosystem under irradiation. |
| Rights: | This is the peer reviewed version of the following article: Physica Status Solidi A applications and materials science Volume 213, Issue 1, pages 178-182, January 2016, which has been published in final form at http://doi.org/10.1002/pssa.201532526. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/64420 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 長谷川 靖哉
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