Open AccessСинтез, структура и теплофизические свойства апатитов Pb-=SUB=-1-x-=/SUB=-Bi-=SUB=-x-=/SUB=-(GeO-=SUB=-4-=/SUB=-)-=SUB=-2+x-=/SUB=-VO-=SUB=-4-=/SUB=-)-=SUB=-4-x-=/SUB=- (x=0-3) в области 350-950 K
Author(s) -
Л. Т. Денисова,
Maxim S. Мolokeev,
В. М. Денисов,
Е. О. Голубева,
Н. А. Галиахметова
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.11.50056.141
Subject(s) - x ray crystallography , annealing (glass) , solid solution , differential scanning calorimetry , analytical chemistry (journal) , atmospheric temperature range , crystallography , diffraction , materials science , calorimetry , chemistry , thermodynamics , physics , metallurgy , optics , chromatography
The compounds Pb10 ‒ xBix(GeO4)2+x(VO4)4-x (x = 0-3) with an aatite structure were first synthesized from the initial oxides of PbO, Bi2O3, GeO2 and V2O5 by solid ‒ phase synthesis with annealing in air in the temperature range of 773-1073 K. Their structure was determined using x-ray diffraction analysis. The influence of temperature on the heat capacity of synthesized compounds was studied using differential scanning calorimetry. Using the experimental data on Cp = f(T), the thermodynamic properties of the compound have been calculated.