Synthesis, Structure, and Thermophysical Properties of Pb10 – xBix(GeO4)2 + xVO4)4 – x (x = 0–3) in the Temperature Range of 350–950 K

The Pb 10 –   x Bi x (GeO 4 ) 2 +   x (VO 4 ) 4 –   x ( x = 0–3) compounds with an apatite structure have been obtained for the first time from the initial PbO, Bi 2 O 3 , GeO 2 , and V 2 O 5 oxides by the solid-state synthesis in the temperature range of 773–1073 K. The structure of the compounds h...

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Published inPhysics of the solid state Vol. 62; no. 11; pp. 2045 - 2051
Main Authors Denisova, L. T., Molokeev, M. S., Denisov, V. M., Golubeva, E. O., Galiakhmetova, N. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.11.2020
Springer Nature B.V
Subjects
Apatite
Bismuth oxides
Bismuth trioxide
Germanium oxides
Physics
Physics and Astronomy
Semiconductors
Solid State Physics
Synthesis
Temperature
Temperature effects
Thermodynamic properties
Thermophysical properties
thermodynamic properties
high-temperature specific heat
bismuth-doped lead vanadate germanates
apatites
structure
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Summary:The Pb 10 –   x Bi x (GeO 4 ) 2 +   x (VO 4 ) 4 –   x ( x = 0–3) compounds with an apatite structure have been obtained for the first time from the initial PbO, Bi 2 O 3 , GeO 2 , and V 2 O 5 oxides by the solid-state synthesis in the temperature range of 773–1073 K. The structure of the compounds has been determined by X-ray diffraction analysis. The effect of temperature on specific heat of the synthesized compounds has been investigated by differential scanning calorimetry. The thermodynamic properties of the compounds have been calculated from the experimental C p = f ( T ) data.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783420110116