Photocontrolled magnetization of CdS-modified Prussian blue nanoparticles.
Photocontrolled magnetization of CdS-modified Prussian blue nanoparticles.
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DOI：
10.1021/ja063461e
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发表时间：
2006-08
影响因子：
15
通讯作者：
Minori Taguchi;Ichizo Yagi;M. Nakagawa;T. Iyoda;Y. Einaga
中科院分区：
文献类型：
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作者：
Minori Taguchi;Ichizo Yagi;M. Nakagawa;T. Iyoda;Y. Einaga
第一个光可控的磁性纳米粒子含有硫化镉和普鲁士蓝（PB）已创建使用反胶束作为纳米反应器。在反胶束体系中，CdS向PB的光诱导电子转移使复合纳米粒子的磁性由铁磁性变为顺磁性。低于4K的铁磁区的磁化强度在紫外光照射后大幅下降，并可以恢复到几乎其原始水平，通过在室温下的热处理。这种设计含有光导半导体和磁性材料的复合纳米颗粒以产生光开关磁性材料的新策略可能在磁光器件的发展中打开许多可能性。
The first photocontrollable magnetic nanoparticles containing CdS and Prussian blue (PB) have been created using reverse micelles as nanoreactors. Photoinduced electron transfer from CdS to PB in the reverse micelle changed the magnetic properties of the composite nanoparticles from ferromagnetic to paramagnetic. The magnetization in the ferromagnetic region below 4 K was substantially decreased after UV light illumination and could be restored almost to its original level by thermal treatment at room temperature. This novel strategy of designing composite nanoparticles containing photoconductive semiconductors and magnetic materials to create photoswitchable magnetic materials may open many possibilities in the development of magneto-optical devices.