The structure and properties of vanadium zinc phosphate glasses

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39910914" target="_blank" >RIV/00216275:25310/17:39910914 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2017.02.012" target="_blank" >http://dx.doi.org/10.1016/j.jnoncrysol.2017.02.012</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2017.02.012" target="_blank" >10.1016/j.jnoncrysol.2017.02.012</a>

Result language
angličtina
Original language name
The structure and properties of vanadium zinc phosphate glasses
Original language description
Homogenous bulk glasses of the ternary system xV(2)O(5)-(50-x)ZnO-50P(2)O(5), x = 0-50 were prepared using the conventional melting procedure. The influence of an increasing content of vanadium on their structure and certain physical properties was investigated. Raman spectra revealed a strong depolymerization of the original metaphosphate network for x>10, the non-bridging oxygens are involved in the V-O-P bonds. With an increasing content of V2O5, the intensity of V-0--V vibration increases. ESR results indicate the partial reduction of V+v to V+IV, with the latter being present as VO2+ ions in axially distorted sites with C-4v symmetry. The optical absorption spectroscopy is shown to be more sensitive to changes in the vicinity of isolated paramagnetic vanadium centres than ESR and indicated a decrease in symmetry from C-4v to C-2v. The basic physical characteristics (density, molar volume, glass transition and softening temperatures and thermal expansion coefficient) were measured and discussed in connection with structural changes.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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