...
  • 主题
高级搜索  >
历史搜索 清空历史
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 >Optical band gap and Raman spectra in some (Bi2O3)(x)(WO3)(y)(TeO2)(100-x-y) and (PbO)(x)(WO3)(y)(TeO2)(100-x-y) glasses
【24h】

Optical band gap and Raman spectra in some (Bi2O3)(x)(WO3)(y)(TeO2)(100-x-y) and (PbO)(x)(WO3)(y)(TeO2)(100-x-y) glasses

机译：（Bi2O3）（x）（WO3）（y）（TeO2）（100-x-y）和（PbO）（x）（WO3）（y）（TeO2）（100-x-y）眼镜的光学带隙和拉曼光谱

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The glasses representing (Bi2O3)(x)(WO3)(y)(TeO2)(100-x-y) and (PbO)(x)(WO3)(y)(TeO2)(100-x-y) systems were prepared. The dilatometric glass-transition temperatures of examined glass samples were found in the region 383-434 degrees C, the coefficient of thermal expansion varied from 12 to 16 ppm/degrees C and the density ranged from 6.30(2) to 6.80(8) g/cm(3). From the optical transmission measurements of thin glassy bulk samples prepared by a glass blowing, the optical gap values were found in the narrow region 3.21-3.36 eV. For the temperature interval 300-480 K, the values of the temperature coefficient of the optical band gap varied from 3.7 x 10(-4) to 5.24 x 10(-4) eV/K. It is suggested that Raman feature observed at around 350 cm(-1) can be assigned to an overlap of Raman bands attributed to WO6 corner shared octahedra and to the following three atomic linkages: Bi-O-Te, Pb-O-Te and W-O-Te.
机译：准备了代表（Bi2O3）（x）（WO3）（y）（TeO2）（100-x-y）和（PbO）（x）（WO3）（y）（TeO2）（100-x-y）系统的玻璃。在383-434摄氏度的范围内发现了被测玻璃样品的膨胀玻璃化转变温度，热膨胀系数在12至16 ppm /摄氏度之间变化，密度在6.30（2）至6.80（8）g之间变化/ cm（3）。从通过吹玻璃制备的薄玻璃状块状样品的光学透射率测量中，在3.21-3.36 eV的狭窄区域中发现了光学间隙值。对于300-480 K的温度区间，光学带隙的温度系数值从3.7 x 10（-4）到5.24 x 10（-4）eV / K变化。建议在约350 cm（-1）处观察到的拉曼特征可以归因于归因于WO6角共享八面体的拉曼谱带的重叠以及以下三个原子键：Bi-O-Te，Pb-O-Te和沃特

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号