Synthesis, structural characteristics, and thermal expansion behavior of zirconium phosphate ceramics with d-transition metalsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 1 декабря 2021 г.
Аннотация:The series M0.5(1+x)FexZr2−x(PO4)3 (M—Ni, Cu, Mn) with Sc2(WO4)3-related structure (SW) were prepared using Pechini technique and characterized by powder X-ray diffraction analysis, SEM, EDX, IR, and Mössbauer spectroscopy. The concentration and temperature limits of solid solution formation were determined, lattice parameters were calculated, and their dependencies on the phosphate’s composition were studied. The crystal structure of the phosphate Mn0.65Fe0.3Zr1.7(PO4)3 (x = 0.3) was refined by the Rietveld method basing on the powder X-ray diffraction data. The compound crystallizes in monoclinic symmetry (space group P21/n) with lattice parameters: a = 8.7941(12), b = 8.9379(16), c = 12.4353(21) Å, β = 90.126(24)°, V = 977.49(27) Å3. Thermal expansion coefficients of the ceramics Cu0.5(1+x)FexZr2−x(PO4)3 were determined. The volume expansion coefficients of the compounds vary in the range (4.4–10.8)∙10−5 K −1.