Room temperature weak ferromagnetism and magnetoconductance in functional CuO film

S. Das; S. Majumdar; S. Giri

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Room temperature weak ferromagnetism and magnetoconductance in functional CuO film

机译：功能性CuO薄膜的室温弱铁磁性和磁导

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The granular CuO films are deposited on n-Si (1 00) and sapphire substrates using sol-gel route. Small microstrain leads to -5 times larger grain sizes (200-300 nm) and -2.5 times larger film thickness (-0.57 xm) for sapphire than n-Si substrate, which are confirmed by X-ray diffraction and Atomic Force Microscopy. A diode-like current-voltage characteristics are observed for film deposited on n-Si substrate, which is absent for sapphire substrate. Typical manifestation of ferromagnetic character is observed for CuO films, which are strongly influenced by the substrates. Magnetic anisotropy is larger for sapphire substrate than n-Si substrate. At room temperature considerably large magnetoconductance -21% and soft ferromagnetic character of CuO film on n-Si substrate are attractive for functional applications.

机译：使用溶胶-凝胶法将颗粒状的CuO薄膜沉积在n-Si（1 00）和蓝宝石衬底上。 X射线衍射和原子力显微镜证实，较小的微应变导致蓝宝石的晶粒尺寸（200-300 nm）大-5倍，而蓝宝石的膜厚度（-0.57 xm）大-2.5倍（n-Si衬底）。对于沉积在n-Si衬底上的膜，观察到了类似二极管的电流-电压特性，而对于蓝宝石衬底则没有。对于CuO薄膜，观察到铁磁特性的典型表现，它受到基材的强烈影响。蓝宝石衬底的磁各向异性比n-Si衬底大。在室温下，n-Si衬底上的CuO膜具有很大的-21％的磁导率和柔软的铁磁特性，对功能性应用很有吸引力。

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来源
《Applied Surface Science》 |2011年第24期|p.10775-10779|共5页
作者
S. Das; S. Majumdar; S. Giri;
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作者单位

Department of Solid State Physics, Indian Association for the Cultivation ofScience, Jadavpur, Kolkata 700 032, India;

Department of Solid State Physics, Indian Association for the Cultivation ofScience, Jadavpur, Kolkata 700 032, India;

Department of Solid State Physics, Indian Association for the Cultivation ofScience, Jadavpur, Kolkata 700 032, India;

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正文语种 eng
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cuo film sol-gel technique ferromagnetism semiconductor spintronics;

机译：薄膜溶胶凝胶技术铁磁半导体自旋电子学;

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Room temperature weak ferromagnetism and magnetoconductance in functional CuO film

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