Department of Physics, Osmania University, Hyderabad 500007, India.
Department of Physics, Osmania University, Hyderabad 500007, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2019 Mar 5;210:308-314. doi: 10.1016/j.saa.2018.11.053. Epub 2018 Nov 19.
Strontium alumino borate glasses doped with Mn ions (SABM) have been prepared and characterized by XRD, density, Electron paramagnetic resonance (EPR), FT-IR and Raman to investigate the spectral and physical properties of the present glass samples. The FTIR spectra revealed the presence of BO and BO structural units in SABM glasses. The IR peak at ~467 and ~679 cm assigned as the vibration of metal cations (Sr), MnO bond vibrations and bending vibration of AlO in [AlO] units. The Raman band ~786 cm establishes the presence of AlO units. It has been found that an increasing the AlO content increases the bond length of the AlO bond in AlO which leads to increase molar volume and decrease density. Differential scanning calorimetry (DSC) studies indicated that the glass transition temperature (T) decreases with increase of AlO. Evaluated g and A values from EPR spectra gave the conformation about the ionic bonding between the Mn and its neighbouring oxygen ions.
掺锰的锶铝硼酸盐玻璃（SABM）已通过 X 射线衍射、密度、电子顺磁共振（EPR）、傅里叶变换红外光谱（FT-IR）和拉曼光谱进行了制备和表征，以研究本玻璃样品的光谱和物理性质。FTIR 光谱显示 SABM 玻璃中存在 BO 和 BO 结构单元。467 和679cm-1 的 IR 峰分别归因于金属阳离子（Sr）的振动、MnO 键振动和[AlO]单元中 AlO 的弯曲振动。~786cm-1 的 Raman 带确定了 AlO 单元的存在。发现随着 AlO 含量的增加，AlO 中 AlO 键的键长增加，导致摩尔体积增加，密度降低。差示扫描量热法（DSC）研究表明，玻璃化转变温度（Tg）随 AlO 的增加而降低。从 EPR 光谱评估的 g 和 A 值给出了 Mn 与其相邻氧离子之间离子键的构象。
