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Full-Text Articles in Physical Sciences and Mathematics
Synthesis, Crystal Structure Refinement, And Electrical Conductivity Of Pb(8−X)Na2smx(Vo4)6o(X/2), Tatiana M. Savankova, Lev G. Akselrud, Lyudmyla I. Ardanova, Alexey V. Ignatov, Eugeni I. Get’Man, Roman E. Gladyshevskii, Stanislav N. Loboda
Synthesis, Crystal Structure Refinement, And Electrical Conductivity Of Pb(8−X)Na2smx(Vo4)6o(X/2), Tatiana M. Savankova, Lev G. Akselrud, Lyudmyla I. Ardanova, Alexey V. Ignatov, Eugeni I. Get’Man, Roman E. Gladyshevskii, Stanislav N. Loboda
Biochemistry, Chemistry and Geology Department Publications
Solid solutions of Pb(8−x)Na2Smx(VO4)6O(x/2) were studied using X-ray diffraction analysis including Rietveld refinement and scanning electron microscopy and by measuring their electrical conductivity. Crystal structure of the solid solutions was refined and the solubility region 0 ≤ x ≤ 0.2 was determined for samarium substitution for lead under the scheme 2Pb2+ + ◻ → 2Sm3+ + O2-. The influence of degree of substitution on the electrical conductivity of solid solutions was established.
Sol-Gel Synthesis, X-Ray Diffraction Studies And Electric Conductivity Of Sodium Europium Silicate, Ekaterina V. Borisova, Alexey V. Ignatov, Eugeni I. Get’Man, Stanislav N. Loboda, Lyudmyla I. Ardanova, Lyudmila V. Pasechnik, Vitaly S. Ponurovsky
Sol-Gel Synthesis, X-Ray Diffraction Studies And Electric Conductivity Of Sodium Europium Silicate, Ekaterina V. Borisova, Alexey V. Ignatov, Eugeni I. Get’Man, Stanislav N. Loboda, Lyudmyla I. Ardanova, Lyudmila V. Pasechnik, Vitaly S. Ponurovsky
Biochemistry, Chemistry and Geology Department Publications
Sodium europium silicate, NaEu9(SiO4)6O2, with apatite structure has been obtained and studied using X-ray diffraction and SEM. It has been shown that sodium sublimation does not take place upon synthesis by the sol-gel method. Rietveld refinement has revealed that sodium atoms are ordered and occupy the 4f position. O(4) atoms not related to silicate ions are placed at the centers of Eu(2) triangles. DC and AC electric conductivity and activation energy have been determined for the compound studied.