الفهرس 
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Abstract
In the present study the role of MnO and CdO in the structure and the physical properties of CdO-MnO-B2O3 glasses has been investigated in a wide range of compositions. XRD investigations of xMnO•(100-x)B2O3 system (20 x 70 mol%) indicated that the glass formation region is limited for 50 x 70 mol%. The fraction of four-coordinated boron atoms Af of the studied glasses is comparable with the data of Park and Bray = up to x = 50 mol%. Higher values of Af for x 50 mol% are attributed to SiO2 contamination from the crucibles. Electric conduction of glasses having 40 x 70 mol% shows features of polaronic nature.
Deconvolution of IR spectra of certain borate glasses may lead to false N4 values. This is the case of CdO–B2O3 glasses. As suggested by chryssikos et al., it is necessary to compare N4 values obtained from the integrated area under the IR spectra with NMR results to get the relative absorption coefficient of BO4 units with respect to BO3 units. This factor is useful to revise the deconvolution results. For both ternary series, the increase in D and Vm when CdO is increased at the expense of MnO is due to greater contribution to both properties from the structural species related to CdO with respect to MnO. The electric conduction process is considered being due to hopping of small polarons.