Influence of bismuth on structural, elastic and spectroscopic properties of Nd3+ doped Zinc–Boro-Bismuthate glasses
Influence of bismuth on structural, elastic and spectroscopic properties of Nd3+ doped Zinc–Boro-Bismuthate glasses
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DOI：
10.1016/j.jlumin.2014.01.032
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发表时间：
2014-05
影响因子：
3.6
通讯作者：
G. Gupta;A. Sontakke;P. Karmakar;K. Biswas;S. Balaji;R. Saha;R. Sen;K. Annapurna
中科院分区：
文献类型：
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作者：
G. Gupta;A. Sontakke;P. Karmakar;K. Biswas;S. Balaji;R. Saha;R. Sen;K. Annapurna
本文报道了铋的加入对[（99.5-x）{4 ZnO-3B 2 O3}-0.5Nd2O3-xBi 2 O3（x =0，5，10，20，30，40，50和60）]玻璃的结构、弹性和光谱性质的影响。测量的FTIR反射光谱促进了对玻璃结构中从硼酸盐（由BO 3和BO 4单元构建）到铋酸盐（BiO 3和BiO 6单元）网络的有条理的修改的透彻了解，这是由于铋含量的增加导致主体声子能量（νph）的稳定降低。从测量的纵向和剪切超声波速度（ULandUs）估计的弹性性能表明，减少网络刚度的玻璃上的Bi 2 O3夹杂物。从记录的Nd ~（3+）离子在这些玻璃中的吸收光谱中获得了三个唯象的Judd-Ofelt强度参数（Ω_2，4，6），并已被用来预测作为铋含量变化的函数的辐射性质。Bi 2 O3的引入降低了基质声子能量，提高了基质的光学碱度，显著改善了Nd 3+的发光性能，如发光强度、量子产率和发光截面。的量子产率表现出强烈的增加，从仅仅16%的锌硼酸盐玻璃中的几乎73%，在60摩尔%的Bi 2 O3含有玻璃。同样地，在所研究的浓度范围内，Nd ~（3+）~ 4F ~（3/2）→ ~ 4 I ~（11/2）激光跃迁的发射截面从2.43×10− 20 cm ~ 2提高到3.95×10− 20 cm ~ 2，这表明在锌硼铋酸盐玻璃中Nd ~（3+）激光光谱性质有了很大的改善。这些材料可能是有前途的紧凑型固态红外激光器。
The present investigation reports, influence of bismuth addition on structural, elastic and spectral properties of [(99.5−x) {4ZnO−3B2O3}−0.5Nd2O3−xBi2O3wherex=0, 5, 10, 20, 30, 40, 50 and 60] glasses. The measured FTIR reflectance spectra facilitated a thorough insight of methodical modifications that are arising in the glass structure from borate (build by BO3and BO4units) to bismuthate (BiO3and BiO6units) network due to the increase of bismuth content ensuing with a steady decrease in host phonon energy (νph). The elastic properties estimated from measured longitudinal and shear ultrasonic velocities (ULandUs) demonstrated the reduction in network rigidity of glasses on Bi2O3inclusion. The three phenomenological Judd–Ofelt intensity parameters (Ω2, 4, 6) were obtained from recorded absorption spectra of Nd3+ions in these glasses and have been used to predict radiative properties as a function of variation in bismuth content. The reduced host phonon energy and high optical basicity effect due to Bi2O3incorporation remarkably improved the Nd3+luminescence properties such as emission intensity, quantum yield and emission cross-section. The quantum yield showed a strong increase from mere 16% in Zinc–Borate glass to almost 73% in 60 mol% Bi2O3containing glass. Similarly, the emission cross-section for Nd3+4F3/2→4I11/2laser transition raised from 2.43×10−20cm2to 3.95×10−20cm2in studied concentration suggesting a strong improvement in Nd3+laser spectroscopic properties in Zinc–Boro-Bismuthate glass. These materials may be promising for compact solid state infrared lasers.