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Photoswitchable Faraday effect in EuS-Au nanosystems

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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
magnetic circular dichroism
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 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Type: article (author version)
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)

Submitter: 長谷川 靖哉

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