Spectroscopic investigations of Cu2+ in Li2O-Na2O-B2O3-Bi2O3 glasses
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چکیده
منابع مشابه
Mixed Alkali Effect in Li2O -Na2O-B2O3 Glasses Containing CuO-An EPR and Optical Study
The “mixed alkali effect” is one of the classical anomalies of glass science. We report here an interesting phenomenon “Mixed Alkali Effect” observed for a series of Cu ions doped xLi2O-(30x)Na2O-70B2O3 (5 ≤ x ≤ 25) glasses, investigated by EPR and optical absorption techniques. The EPR spectra of all the investigated samples exhibit resonance signals characteristic of Cu ions in octahedral sit...
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The role of Ge02 in the Na20 B2O3 Ge02 Si02 quaternary system which presents a spinodal decomposition domain is studied. The physical properties of this system are compared to those of the system without Ge02. The leaching conditions of these glasses and the coordination of Ge are studied.
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Several studies of internal fiiction have been performed on silicate glasses. This work has the specificity to refer to isothermal mechanical spectroscopy over a large frequency range and for temperatures between 290 K and 520 K. Experiments were carried out with a single alkali silicate glass and two mixed alkali silicate glasses in order to observe the mixed alkali effect, to follow its evolu...
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Fe2O3-Bi2O3-B2O3 (FeBiB) glasses were developed as novel pH responsive hydrophobic glasses. The influence of the glass composition on the pH sensitivity of FeBiB glasses was investigated. The pH sensitivity drastically decreased with decreasing B2O3 content. A moderate amount of Fe2O3 and a small amount of B2O3 respectively produces bulk electronic conduction and a pH response on glass surfaces...
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ژورنال
عنوان ژورنال: Bulletin of Materials Science
سال: 2006
ISSN: 0250-4707,0973-7669
DOI: 10.1007/bf02704136