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首页> 外文期刊>Chemistry: A European journal >Enhanced Magneto-optical Properties of Semiconductor EuS Nanocrystals Assisted by Surface Plasmon Resonance of Gold Nanoparticles
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Enhanced Magneto-optical Properties of Semiconductor EuS Nanocrystals Assisted by Surface Plasmon Resonance of Gold Nanoparticles

机译：金纳米粒子的表面等离子体共振辅助半导体EuS纳米晶体增强的磁光性能

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摘要

Remarkable magneto-optical properties of a new isolator material, that is, europium sulfide nanocrystals with gold (EuS-Au nanosystem), has been demonstrated for a future photoinformation technology. Attachment of gold particles that exhibit surface plasmon resonance leads to amplification of the magneto-optical properties of the EuS nanocrystals. To construct the EuS-Au nanosystems, cubic EuS and spherical Au nanocrystals have been joined by a variety of organic linkers, that is, 1,2-ethanedithiol (EDT), 1,6- hexanedithiol (HDT), 1,10-decanedithiol (DDT), 1,4-bisethanethionaphthalene (NpEDT), or 1,4-bisdecanethionaphthalene (NpDDT). Formation of these systems was observed by XRD, TEM, and absorption spectra measurements. The magneto-optical properties of the EuS-Au nanosystem have been characterized by using Faraday rotation spectroscopy. The Faraday rotation angle of the EuS-Au nanosystem is dependent on the Au particle size and interparticle distance between EuS and Au nanocrystals. Enhancement of the Faraday rotation of EuS-Au nanosystems was observed. The spin configuration in the excited state of the EuS-Au nanosystem was also investigated using photo-assisted electron paramagnetic resonance.
机译：新型隔离材料的显着磁光特性，即具有金的硫化euro纳米晶体（EuS-Au纳米系统）已被证明可用于未来的光信息技术。表现出表面等离子体共振的金颗粒的附着导致EuS纳米晶体的磁光特性的放大。为了构建EuS-Au纳米系统，已将立方EuS和球形Au纳米晶体通过各种有机连接剂连接在一起，即1,2-乙二硫醇（EDT），1,6-己二硫醇（HDT），1,10-癸二醇（DDT），1,4-双乙烷硫代萘（NpEDT）或1,4-双癸硫代萘（NpDDT）。通过XRD，TEM和吸收光谱测量观察到这些系统的形成。 EuS-Au纳米系统的磁光特性已经通过使用法拉第旋转光谱学进行了表征。 EuS-Au纳米系统的法拉第旋转角取决于Au粒径和EuS与Au纳米晶体之间的粒子间距离。观察到EuS-Au纳米系统的法拉第旋转增强。还使用光辅助电子顺磁共振研究了EuS-Au纳米系统在激发态下的自旋构型。

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