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Structural features of hafnium iron phosphate glasses

机译:磷酸iron铁玻璃的结构特征

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摘要

Structural features and properties of a series of hafnium iron phosphate glasses have been investigated by Mossbauer spectroscopy and X-ray diffraction. Mossbauer spectra indicate that all of the glasses contain both Fe(II) and Fe(III) ions. The isomer Shift Values obtained from the Mossbauer fits show that both Fe(II) and Fe(III) ions are in octahedral or distorted octahedral coordination. The crystalline HfP2O7 phase was detected in all the samples by powder X-ray diffraction but this did not degrade the chemical durability of the glasses as the dissolution rates of the glasses are comparable to that of base iron phosphate glass.
机译:Mossbauer光谱学和X射线衍射研究了一系列b铁磷酸盐玻璃的结构特征和性能。 Mossbauer光谱表明,所有玻璃均包含Fe(II)和Fe(III)离子。从Mossbauer拟合获得的异构体位移值表明,Fe(II)和Fe(III)离子均处于八面体或扭曲的八面体配位状态。通过粉末X射线衍射在所有样品中检测到结晶的HfP2O7相,但这不会降低玻璃的化学耐久性,因为玻璃的溶解速度与磷酸铁基玻璃的溶解速度相当。

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