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首页> 外文会议>International Conference on "Multidimensional Role of Basic Science in Advanced Technology" >Physical, structural and optical properties of Chromium doped Antimony Borate glass system
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Physical, structural and optical properties of Chromium doped Antimony Borate glass system

机译：铬掺杂锑硼酸盐玻璃系统的物理，结构和光学性质

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Binary Glass system with the composition 40Sb_2O_3-(60-x) B_2O_3: xCr_2O_3 for x = 0.1, 0.3 and 0.5 mol % were prepared by the melt-quenching technique. The prepared glass samples were characterized by XRD, FTIR, EPR, PL and Optical absorption spectra. The physical properties were also studied. From the XRD studies, the glass samples were amorphous in nature. From the FTIR spectra, it is observed that the % of transmittance decreased with the increase of dopant concentration. From the EPR spectra of pure and Cr~(3+) doped antimony borate glasses, two principal resonance lines are observed. The first is a broad asymmetric band at low magnetic field with an effective g value of 4.2281 and the second is a broad asymmetric line at high magnetic field with an effective g value of 1.9716. No EPR signal was detected for the pure glass, which indicates that the pure glass is free of paramagnetic impurities. Optical absorption and luminescence spectra of all the glasses were recorded at room temperature. From the observed absorption edges optical band gap, the Urbach energies were calculated. The optical band gap is found to decrease with the concentration of Cr_2O_3. The luminescence spectra exhibited conventional near infra-red emission bands at around 789, 845 nm under 420 and 460 nm excitation wavelength.
机译：二元玻璃系统具有组合物40SB_2O_3-（60-X）B_2O_3：X = 0.1的XCR_2O_3通过熔体淬火技术制备0.3和0.5mol％。制备的玻璃样品的特征在于XRD，FTIR，EPR，PL和光学吸收光谱。还研究了物理性质。从XRD研究中，玻璃样品本质上是无定形的。从FTIR光谱，观察到，随着掺杂剂浓度的增加，透射率％​​降低。从纯和Cr〜（3+）掺杂锑硼酸盐的EPR光谱，观察到两个主要共振线。首先是在低磁场处的宽不对称带，其有效G值为4.2281，第二个是高磁场的宽不对称线，具有1.9716的有效G值。对于纯玻璃，没有检测到EPR信号，这表明纯玻璃不含顺磁性杂质。在室温下记录所有玻璃的光学吸收和发光光谱。从观察到的吸收边缘光带隙，计算了URBACH能量。发现光带间隙随着CR_2O_3的浓度而降低。发光光谱在420和460nm激发波长下显示出近789,845nm的常规近的红外发射带。

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