Enhancement of magnetic circular dichroism in bi-layered ZnO-Bi:YIG thin films
Enhancement of magnetic circular dichroism in bi-layered ZnO-Bi:YIG thin films
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DOI：
10.1063/1.4976952
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发表时间：
2017-02
期刊：
影响因子：
1.6
通讯作者：
S. Mito;Y. Shiotsu;J. Sasano;H. Takagi;M. Inoue
中科院分区：
文献类型：
--
作者：
S. Mito;Y. Shiotsu;J. Sasano;H. Takagi;M. Inoue
制备了双层氧化锌（ZnO）和铋取代的钇铁石榴石（Bi：YIG）并进行了磁光研究。观察到法拉第旋光和磁圆二色性（MCD）的增强。MCD增强的波长与ZnO的激子波长一致。这种增强仅在双层中观察到，并且意味着在ZnO中产生的激子与Bi：YIG相互作用。由于ZnO的激子波长可以通过电光效应来控制，这一结果具有实现磁光效应电压控制的潜力。
Bi-layered zinc oxide (ZnO) and bismuth substituted yttrium iron garnet (Bi:YIG) was fabricated and magneto-optically investigated. Enhancement of Faraday rotation and magnetic circular dichroism (MCD) was observed. The wavelength of MCD enhancement was in good agreement with exciton wavelength of ZnO. This enhancement was only observed in the bi-layer, and implies that the exciton generated in ZnO interacted with Bi:YIG. Because the exciton wavelength of ZnO can be controlled by electro-optic effect, this result has the potential for realizing voltage control of magneto-optic effect.