TY - JOUR
T1 - Development of optical nonlinearity, high dielectric constant and ferromagnetic behavior in a silicate glass nanocomposite by suitable heat treatment
AU - Basu, S.
AU - Gopalan, V.
AU - Jain, H.
AU - Chakravorty, D.
N1 - Funding Information:
The work was carried out under a collaborative programme between IACS, India, Lehigh University, USA, and MRL, Pennsylvania State University, USA with the support of NSF’s IMI-NFG, USA (Grant No. DMR-0409588). S. Basu also thanks CSIR, New Delhi, India for a senior research fellowship. D. Chakravorty thanks Indian National Science Academy, New Delhi for the award of a Senior Scientist position. Part of the work was carried out with the support of a DST, New Delhi sponsored project under its Nano Science and Technology Initiative.
PY - 2008/6/15
Y1 - 2008/6/15
N2 - We have explored the development of multifunctionalities viz, optical nonlinearity, high dielectric constant and ferromagnetic behavior in a nanostructured silica based glass of 14.0Na2O, 26.0BaO, 26.0TiO2, 16.0B2O3, 17.0SiO2, 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 × 10-19 m2/W and 1.15 × 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.
AB - We have explored the development of multifunctionalities viz, optical nonlinearity, high dielectric constant and ferromagnetic behavior in a nanostructured silica based glass of 14.0Na2O, 26.0BaO, 26.0TiO2, 16.0B2O3, 17.0SiO2, 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 × 10-19 m2/W and 1.15 × 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.
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U2 - 10.1016/j.jnoncrysol.2008.02.015
DO - 10.1016/j.jnoncrysol.2008.02.015
M3 - Article
AN - SCOPUS:43549110024
SN - 0022-3093
VL - 354
SP - 3278
EP - 3283
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
IS - 28
ER -