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Network of new quaternary borate glasses Bi2O3–Y2O3–Al2O3–B2O3 was studied by FTIR and UV spectroscopies. According to the FTIR results, the addition of Y2O3 increases the amount of bridging oxygens and changes the coordination number of the glasses by creating [BO4] structural units. FTIR investigations explained the increase of the computed elastic moduli according to Makishima–Mackenzie model....
The ultrasonic parameters, the optical parameters along with the IR spectroscopy and magnetic susceptibility studies have been employed to explore the role of Gd 2 O 3 in the structure of the glasses xGd 2 O 3 –60B 2 O 3 –10MoO 3 –(30-x)Bi 2 O 3 , with 0 ≤ x ≤ 7 mol %. IR analysis indicates that Gd 2 O 3 is preferentially...
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