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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Development of optical nonlinearity, high dielectric constant and ferromagnetic behavior in a silicate glass nanocomposite by suitable heat treatment
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Development of optical nonlinearity, high dielectric constant and ferromagnetic behavior in a silicate glass nanocomposite by suitable heat treatment

机译:通过适当的热处理在硅酸盐玻璃纳米复合材料中发展光学非线性,高介电常数和铁磁性能

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摘要

We have explored the development of multifunctionalities viz, optical nonlinearity, high dielectric constant and ferromagnetic behavior in a nanostructured silica based glass of 14.0Na(2)O, 26.0BaO, 26.0TiO(2), 16.0B(2)O(3), 17.0SiO(2), 1.0NiO (mol%) composition. A heat treatment at 863 K for 4 h led to nonlinear refractive index and absorption coefficients at wavelength 800 nm of 0.11 x 10(-19) m(2)/W and 1.15 x 10(-3) cm/GW, respectively. A heat treatment at 1073 K for 2 h followed by 1113 K for 3 h increased the dielectric constant from 11 to 50, apparently due to the formation of nanocrystals of BaTiO3 within the glass medium. Glass samples reduced at 923 K for 1 h exhibited ferromagnetic behavior due to the presence of nickel nanoparticles. (C) 2008 Elsevier B.V. All rights reserved.
机译:我们已经探索了纳米结构二氧化硅基玻璃14.0Na(2)O,26.0BaO,26.0TiO(2),16.0B(2)O(3)的多功能性,光学非线性,高介电常数和铁磁行为的发展。 ,17.0SiO(2),1.0NiO(mol%)组成。在863 K处热处理4 h导致波长800 nm处的非线性折射率和吸收系数分别为0.11 x 10(-19)m(2)/ W和1.15 x 10(-3)cm / GW。在1073 K下进行2小时的热处理,然后在1113 K下进行3小时的热处理,将介电常数从11增加到50,这显然是由于玻璃介质中形成了BaTiO3纳米晶体。由于存在镍纳米粒子,在923 K下还原1 h的玻璃样品表现出铁磁行为。 (C)2008 Elsevier B.V.保留所有权利。

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