Spectral studies on Cr~(3+) ions doped in sodiumlead borophosphate glasses

Kiran N.; Kesavulu C.R.; Suresh Kumar A.; Rao J.L.

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Spectral studies on Cr~(3+) ions doped in sodiumlead borophosphate glasses

机译：钠铅硼磷酸盐玻璃中Cr〜（3+）离子掺杂的光谱研究

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Electron paramagnetic resonance (EPR), optical absorption and emission spectra of Cr~3 ions doped in (30-x) (NaPO_3) _630PbO40B_2O_3xCr_2O_3 (x=0.5, 2.0, 3.0, 4.0 and 5.0 mol%) glasses have been studied. The EPR spectra exhibit resonance signals with effective g values at g≈4.55 and g≈1.97. The EPR spectra of x=3.0 mol% of Cr_2O_3 in sodiumlead borophosphate glass sample were studied at various temperatures (295123 K). The intensity of the resonance signals increases with decrease in temperature. The optical absorption spectrum exhibits four bands characteristic of Cr~3 ions in octahedral symmetry. From the analysis of the bands, the crystal-field parameter Dq and the Racah interelectronic repulsion parameters B and C have been evaluated. The emission spectrum exhibit one broad band characteristic of Cr~3 ions in octahedral symmetry. This band has been assigned to the transition ~4T_(2g) (F)→~4A_(2g) (F). Correlating EPR and optical data, the molecular bonding coefficient (α) has been evaluated.

机译：研究了（30-x）（NaPO_3）_630PbO40B_2O_3xCr_2O_3（x = 0.5、2.0、3.0、4.0和5.0 mol％）玻璃中掺杂的Cr〜3离子的电子顺磁共振（EPR），光吸收和发射光谱。 EPR谱显示出共振信号，其有效g值分别为g≈4.55和g≈1.97。在不同温度（295123 K）下研究了x = 3.0 mol％Cr_2O_3在硼酸铅硼玻璃样品中的EPR光谱。谐振信号的强度随着温度的降低而增加。光学吸收光谱以八面体对称性表现出Cr〜3离子的四个能带特征。通过对频带的分析，评估了晶体场参数Dq和拉卡电子间排斥参数B和C。发射光谱呈现出八面体对称的Cr〜3离子的宽带特征。该频段已分配给过渡〜4T_（2g）（F）→〜4A_（2g）（F）。将EPR和光学数据相关联，已评估了分子键合系数（α）。

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《Physica, B. Condensed Matter》 |2011年第10期|共5页
作者
Kiran N.; Kesavulu C.R.; Suresh Kumar A.; Rao J.L.;
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Cr~3 ions; Electron paramagnetic resonance; Sodiumlead borophosphate glasses;

机译：Cr〜3离子;电子顺磁共振;硼磷酸钠铅玻璃;

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1. Spectral studies on Cr~(3+) ions doped in sodiumlead borophosphate glasses [J] . Kiran N., Kesavulu C.R., Suresh Kumar A., Physica, B. Condensed Matter . 2011,第10期

机译：钠铅硼磷酸盐玻璃中Cr〜（3+）离子掺杂的光谱研究
2. Spectral investigations of Sm ~(3+) doped lead bismuth magnesium borophosphate glasses [J] . Ravi Babu Y.N.C., Sree Ram Naik P., Vijaya Kumar K., Journal of Quantitative Spectroscopy & Radiative Transfer . 2013,第13期

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3. Fluorescence of Sm~(3+), Eu~(3+), Tb~(3+), Ho~(3+) and Er~(3+) Doped Borophosphate Glasses [J] . S. S. L. Surana, C. L. Gehlot, S. P. Tandon, Canadian journal of analytical sciences and spectroscopy: International journal of the Spectroscopy Society of Canada . 2003,第5期

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4. Synthesis and Optical Studies on Concentration Dependent Dy~(3+) Doped Sodium-borophosphate Glasses [C] . A. Josuva DSilva, K. Maheshvaran, I. Arul Rayappan National Conference on Physics and Chemistry of Materials . 2019

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Spectral studies on Cr~(3+) ions doped in sodiumlead borophosphate glasses

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