caa a22 4500 46322499X CHVBK 20180405153224.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10853-006-0489-6 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0489-6 Yousef El Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch, 002, Assiut, Egypt aut Thermal and optical properties of zinc halotellurite glasses [Elektronische Daten] [El Yousef] Zinc halotellurite glasses were studied with respect to the glass transition, softening temperature, thermal expansion, optical energy gap, Urbach energy, density, molar volume, refractive index, polarizability, molar refraction and third order non-linear optical susceptibility. Thermal characteristic were determined using a dilatometry. The optical absorption in the wavelength range (300-3200nm) was measured. From the absorption edge studies, the values of optical band gap (E opt) and Urbach energy (ΔE) have been evaluated. Optical parameters viz., color dispersion, dispersion energy, E d, average oscillator energy, E 0, and third order non-linear optical susceptibility values are estimated from measuring the refractive index at different wavelength. Results obtained are discussed in terms of the glass structure. Springer Science+Business Media, LLC, 2007 Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/12(2007-06-01), 4502-4507 0022-2461 42:12<4502 2007 42 10853 https://doi.org/10.1007/s10853-006-0489-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0489-6 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Yousef El Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch, 002, Assiut, Egypt aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/12(2007-06-01), 4502-4507 0022-2461 42:12<4502 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer