Novel opto-magnetic silicate glass with semiconductor EuS nanocrystals
Novel opto-magnetic silicate glass with semiconductor EuS nanocrystals
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DOI：
10.1016/j.jallcom.2013.02.064
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发表时间：
2013-06
影响因子：
6.2
通讯作者：
T. Nakanishi;M. Maeda;Aki Kawashima;S. Kamiya;K. Fushimi;K. Fujita;Katsuhisa Tanaka;Y. Hasegawa
中科院分区：
文献类型：
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作者：
T. Nakanishi;M. Maeda;Aki Kawashima;S. Kamiya;K. Fushimi;K. Fujita;Katsuhisa Tanaka;Y. Hasegawa
报道了一种新型的含半导体EuS纳米晶的磁光石英玻璃。通过水解反应和配体交换过程（从NH 2-基团到OH-基团）合成了具有EuS NCs的二氧化硅玻璃。EuS NC周围的二氧化硅骨架在500°C下提供热稳定结构。该玻璃材料在可见光区（400- 700 nm）也显示出有效的磁光性质，即法拉第旋转。与传统的EuS纳米粒子相比，在PMMA聚合物中的法拉第旋转光谱的正峰发生了蓝移。法拉第旋转的有效峰位移是由于EuS纳米粒子表面配位体的变化引起的。这种具有热稳定结构的EuS-SiO2纳米玻璃复合材料在高功率激光器的光隔离器方面具有潜在的应用前景。
Novel magneto-optical silica glass with semiconductor EuS nanocrystals (NCs) has been reported. The silica glass with EuS NCs is synthesized by the hydrolysis reaction with a ligand exchange process (from NH2-group to OH-group). The silica framework around EuS NCs provides thermo-stable structure under 500°C. The glass material also shows effective magneto-optical properties, Faraday rotation, in the visible region (400–700nm). The positive peak of Faraday rotation spectrum is blue-shifted in comparison with traditional EuS NCs in PMMA polymer. The effective peak-shift of Faraday rotation is caused by ligand change on EuS NCs surface (Nephelauxetic effect). The EuS-silica nanoglass composite with thermally stable structure would have potential applications as an optical isolator with a high-power laser.