论文标题
SM $ _3 $+掺杂NA $ _2 $ o-Zno-Teo $ _2 $玻璃材料的光学特性和介电性质的增强
Enhancement of optical properties and dielectric nature of Sm$_3$+doped Na$_2$O-ZnO-TeO$_2$ Glass materials
论文作者
论文摘要
samarium掺杂na $ _2 $ o-zno-teo $ _2 $（NZT）玻璃是通过熔体淬火方法制备的。使用差分热分析（DTA）和热力学分析（TGA），通过Hruby参数估算了制备玻璃的玻璃形成能力和玻璃稳定性。 FTIR光谱和X射线衍射的研究分别描述了玻璃的离子性质和无定形模式。在418 nm，462 nm和6H5/2-4I11/2在478 nm的478 nm处，在418 nm，6H5/2-4I15/2在418 nm，6H5/2-4I15/2时观察到了6H5/2-4p3/2的过渡6H5/2-4p3/2的吸收峰。计算光条间隙能（例如），并观察到，掺杂浓度从2.95 eV降低到1.50 eV。在SM3+掺杂玻璃样品中观察到可见的发射带。发现与频率的介电常数变化在3 kHz -2 MHz的频率范围内是独立的。温度依赖性直流电导率的测量显示了Arrhenius类型传导机理。
Samarium doped Na$_2$O-ZnO-TeO$_2$ (NZT) glasses were prepared by the melt quenching method. The glass-forming ability and glass stability of prepared glass was estimated by Hruby parameter using Differential Thermal Analysis (DTA) and Thermo-gravimetric Analysis (TGA). The study of FTIR spectra and X-ray diffraction described the ionic nature and the amorphous pattern of glass respectively. The absorption peaks were observed for the transitions 6H5/2-4P3/2 at 402 nm,6H5/2-4M19/2 at 418 nm, 6H5/2-4I15/2 at 462 nm and 6H5/2-4I11/2 at 478 nm in the absorption spectra. The optical band gap energy (Eg) was calculated and observed to be decreased from 2.95 eV to 1.50 eV with doping concentration. The visible emission band was observed in the Sm3+ doped glass samples. The variation of dielectric constant with frequency was found to be independent for the frequency range 3 kHz - 2 MHz. The measurement of temperature-dependent dc conductivity showed Arrhenius type mechanism of conduction.
