期刊
PHYSICA SCRIPTA
卷 97, 期 3, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1402-4896/ac53c7
关键词
sodium tetraborate glasses; urbach energy; spin-hamiltonian parameters
资金
- OU-DST-PURSE-II programme, Osmania University [C-DST-PURSE-II/38/2020]
- Taif University, Taif, Saudi Arabia [TURSP-2020/45]
Borate glasses Na2B4O7-CdO-CuO-BaTiO3 have been synthesized using the traditional melt quenching method. The addition of BaTiO3 significantly affects the density and molar volume of the glass samples. Spectroscopic investigations reveal that the glass network consists of different structural units, including [BO3], [BO4], and [TiO4]. TiO2 plays a role in glass formation. The composition dependence of BaTiO3 influences the disorder of the glass structure and the optical band gap. EPR spectra indicate that Cu2+ ions occupy elongated octahedral positions with tetragonal distortions.
Borate glasses Na2B4O7-CdO-CuO-BaTiO3 have been manufactured by the traditional melt quenching method. The increment of BaTiO3 affects strictly the density and the molar volume of the glass samples. The spectroscopic investigations by FTIR and Raman spectra show that the glass network consists of different structural units of [BO3] and [BO4] along with [TiO4]. The elaborated investigations assume the glass former role of TiO2. These arguments depend on the transformation of [BO3] into [BO4] units, which result in a decrement in the magnitude of disorder in the glass structure. The compositional dependence on BaTiO3 reveals that the behavior of Urbach energy confirms the increment of the disorder and the trend of the optical band gap shows a decrement process with a priority to direct transitions. Moreover, EPR spectra revealed that the Cu2+ ions occupy the positions of elongated octahedral positions with tetragonal distortions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据