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首页> 外文期刊>Chinese journal of aeronautics >Magnetic and Optical Properties of the TiO_2-Co-TiO_2 Composite Films Grown by Magnetron Sputtering
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Magnetic and Optical Properties of the TiO_2-Co-TiO_2 Composite Films Grown by Magnetron Sputtering

机译：磁控溅射生长TiO_2-Co-TiO_2复合薄膜的磁性和光学性质

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摘要

The TiO_2-Co-TiO_2 sandwich films were successfully grown on glass and silicon substrata making alternate use of radio frequency reactive magnetron sputtering and direct current magnetron sputtering. The structures and properties of these films were identified with X-ray diffraction (XRD), Raman spectra and X-ray photoemission spectra (XPS). It is shown that the sandwich film consists of two anatase TiO_2 films with an embedded Co nano-film. The fact that, when the Co nano-film thickens, varied red shifts appear in optical absorption spectra may well be explained by the quantum confinement and tunnel effects. As for magnetic properties, the saturation magnetization, remnant magnetic induction and coercivity vary with the thickness of the Co nano-films. Moreover, the Co nano-film has a critical thickness of about 8.6 nm, which makes the coercivity of the composite film reach the maximum of about 1413 Oe.
机译：TiO_2-Co-TiO_2三明治膜成功地在玻璃和硅基底上生长，并交替使用了射频反应磁控溅射和直流磁控溅射。这些膜的结构和性质通过X射线衍射（XRD），拉曼光谱和X射线光发射光谱（XPS）鉴定。结果表明，夹心膜由两层锐钛矿型TiO_2膜和嵌入的Co纳米膜组成。当Co纳米膜增厚时，在光吸收光谱中出现变化的红移的事实可以很好地解释为量子限制和隧道效应。至于磁性能，饱和磁化强度，剩余磁感应强度和矫顽力随Co纳米薄膜的厚度而变化。而且，Co纳米膜的临界厚度为约8.6nm，这使得复合膜的矫顽力达到约1413Oe的最大值。

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