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http://dx.doi.org/10.4191/KCERS.2003.40.11.1078

Nano-crystallization Behavior and Optical Properties of Na2O-Nb2O5-TeO2Glasses (1)  

김현규 (포항공과대학교 화학공학과/환경공학부)
류봉기 (부산대학교 재료공학과)
차재민 (부산대학교 재료공학과)
김병관 (창원대학교 화공시스템공학과)
이재성 (포항공과대학교 화학공학과/환경공학부)
Publication Information
Abstract
In order to develop a new type of nonlinear optical materials or photocatlaysts, Na$_2$O-Nb$_2$ $O_{5}$-Te $O_2$ glasses were prepared using conventional melt quenching method, and the crystallization behaviors and optical properties of these glasses was investigated. The optical and physical properties for Na$_2$O-Nb$_2$ $O_{5}$-Te $O_2$ glasses are: refractive index, n=2.04$\pm$0.04; density, p (g/㎤)=4.87$\pm$0.58; optical energy band of the transmission cut-off wavelength, E$_{0}$ (eV)=3.14$\pm$0.04. The transparent glass ceramics consisting of the nanocrysatls were obtained when the Na$_2$O-Nb$_2$ $O_{5}$-Te $O_2$ glass was first heat-treated at 3$50^{\circ}C$ for 1 h and than at 40$0^{\circ}C$ for 1 h. A cubic crystalline phase consisting of the nano-crysatls transforms into a stable phase at temperature above 47$0^{\circ}C$ for 1 h.
Keywords
$TeO_2$ glasses; Optical property; Glass-ceramics; Transparent Glass-ceramics; Nano-crystals;
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