open access

https://hdl.handle.net/2115/64420

Photoswitchable Faraday effect in EuS-Au nanosystems

英語

nanoparticles

2016-01

Wiley-Blackwell

Physica Status Solidi A applications and materials science

213(1)

178-182

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.

学術雑誌論文

Accepted Manuscript

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.

1862-6300