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Glass-ceramics with compositions 4.5MgO(45−x)CaO34SiO 2 16P 2 O 5 0.5CaF 2 xFe 2 O 3 (where x=0, 5, 10, 15 and 20wt.%) were obtained by heat-treatment of melt quenched glasses at 1050°C. Hydroxyapatite, magnetite and wollastonite were identified as major crystalline phases in all the glass-ceramic samples containing iron oxide. Akermanite was detected...
Optical band gap (E opt ) for Pb modified Ge-Se-Te bulk glasses has been measured using the photoacoustic (PA) technique. The advantage of this technique over the absorption spectrophotometry technique is that this method is independent of sample thickness and provides optical band gap energy (E opt ) values corresponding to a high (~10 4 cm -1...
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