Effect of Field Strength and Electronegativity of CaO and MgO on Structural and Optical Properties of SiO2-K2O-CaO-MgO Glasses

被引：20
|
作者：
Jha, Praveen [1 ]
Singh, K. [1 ]
机构：
[1] Thapar Univ, Sch Phys & Mat Sci, Patiala 147004, Punjab, India
来源：
SILICON | 2016年 / 8卷 / 03期
关键词：
X-ray diffraction; FT-IR; Optical properties; Defects; BIOACTIVE GLASSES; SILICATE-GLASSES;
D O I：
10.1007/s12633-015-9307-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The glass composition 55 SiO2-10 K2O-(35-x) CaO-(x) MgO (0 a parts per thousand currency sign x a parts per thousand currency sign 30) is prepared by the melt quenched technique. The as prepared samples are characterized by X-ray diffraction, Fourier Transform-Infrared Spectroscopy (FT-IR) and UV-Visible reflectance spectroscopy. The MgO containing glasses show better polymerization (cross-linking) and have a compact glass network as compared to CaO containing glass. Interestingly, some weak bonds are observed around 1393, 1461 and 1530 cm(-1) in FT-IR spectra related to Ca/Mg-O-H. The optical band gap of the series varies from 3.42 eV to 3.72 eV, indicating wide-band gap materials that could be used in non-linear optical applications.
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页码：437 / 442
页数：6
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