Mössbauer and infrared studies of some glasses and glass-ceramics from the <i>X</i>MnO(40-<i>X</i>)<i>Y</i>Fe₂O₃.10Al₂O₃.50B₂O₃ system

Abstract

The⁵⁷Fe Mössbauer technique has been used to investigate the behaviour of glasses and their corresponding glass ceramic derivatives obtained from the system <i style="">X</i>MnO(40-<i style="">X</i>)<i style="">Y</i>Fe₂O₃.10Al₂O₃.50B₂O_3, along with the effect of Al and Mn doping at the Fe-site for all the samples. MnO was introduced gradually to replace Fe₂O₃ in the series such that <i style="">X</i>=0,5,10,15,20 and 25 mol% of MnO containing 50% B₂O₃. The structural changes observed are consistent with Mn₂O₃ formulation and inferred by monitoring the infrared absorption spectra in the range 500-4000cm^–1 by KBr technique. The Mössbauer technique is used for identification of crystalline material and the results are compared with that obtained from X-ray diffraction.