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Magneto-optics of nanoscale Bi:YIG films

机译:magneto-optics of nanoscale BI:Y IG films

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摘要

Magnetic circular dichroism in the spectral region from 270 to 850 nm and Faraday rotation at the wavelength of 655 nm in ultrathin (1.5-92.8 nm) films prepared by reactive ion beam sputtering of target of nominal composition Bi_(2.8)Y_(0.2)Fe_5O_(12) were studied. The observed effects of the "blue shift," inversion of the signs and change in the intensity of magneto-optical transitions, are discussed. It is demonstrated that all studied nanoscale films reveal magnetic properties--and their composition depends on the method of substrate surface pretreatment.
机译:通过标称成分Bi_(2.8)Y_(0.2)Fe_5O_的反应离子束溅射制备的超薄(1.5-92.8 nm)薄膜在270至850 nm光谱范围内的磁性圆二色性和655 nm波长的法拉第旋转(12)进行了研究。讨论了观察到的“蓝移”,符号反转和磁光跃迁强度变化的影响。已证明所有研究的纳米级薄膜都具有磁性-且其成分取决于基材表面预处理的方法。

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