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SrGa0.7Co0.3O3-delta perovskite-cobalt oxide-metal nanocomposite films: magnetic and optical properties

机译:SrGa0.7Co0.3O3-δ钙钛矿-氧化钴-金属纳米复合薄膜:磁性和光学性质

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摘要

Two-phase nanocomposite films consisting of metallic Co nanoparticles below 50 nm diameter in a perovskite matrix were grown by pulsed laser deposition onto (LaAlO3)(0.3)(Sr2AlTaO6)(0.7) (LSAT) and silicon substrates from a target of SrGa0.73Co0.27O3. The particles made up about 6% by volume of the film and were present within the film and at the substrate interface. The saturation magnetization of the film was up to 85 emu cm(-3) at 80 nm thickness and the Faraday rotation (FR) tracked the out-of-plane hysteresis loop, reaching 3000 deg cm(-1) at 10 kOe for 1550 nm wavelength. The magneto-optical figure of merit defined as FR divided by optical absorption was 0.04-0.06 deg dB(-1) due to the high optical absorption of the Co particles.
机译:通过脉冲激光沉积在靶标SrGa0.73Co0的(LaAlO3)(0.3)(Sr2AlTaO6)(0.7)(LSAT)和硅衬底上,在钙钛矿基质中形成由直径小于50 nm的金属Co纳米颗粒组成的两相纳米复合膜。 .27O3。颗粒占膜体积的约6%,并且存在于膜内和基材界面处。膜的饱和磁化强度在80 nm处高达85 emu cm(-3),法拉第旋转(FR)跟踪平面外磁滞回线,在10 kOe达到1550千欧(3000)cm(-1)纳米波长。定义为FR除以光吸收的磁光品质因数为0.04-0.06 deg dB(-1),这归因于Co粒子的高光吸收。

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