We introduce FeCo‐BaF and FeCo‐SiN nanogranular films exhibiting giant Faraday effect. These films have a nanocomposite structure, in which nanometer‐sized FeCo ferromagnetic granules are dispersed in BaF₂ or Si₃N₄ matrix. FeCo‐BaF film has a good figure of merit of Faraday effect from the crystalized BaF₂ matrix. FeCo‐SiN film has a large refraction index from the nature of Si₃N₄ matrix. These properties contribute to the practical application of nanogranular films to optical devices.

中文翻译：

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FeCo-BaF和FeCo-SiN纳米颗粒薄膜的巨型法拉第效应

我们介绍了展现出巨大的法拉第效应的FeCo-BaF和FeCo-SiN纳米颗粒薄膜。这些膜具有纳米复合结构，其中纳米尺寸的FeCo铁磁颗粒分散在BaF ₂或Si ₃ N ₄基质中。FeCo-BaF膜具有结晶的BaF ₂基质的法拉第效应的优良品质。由于Si ₃ N ₄基体的性质，FeCo-SiN膜具有较大的折射率。这些性质有助于纳米颗粒膜在光学器件中的实际应用。