Effect of substitution Lead for Calcium on the electrophysical properties of double lead sodium vanadate Pb<sub>8</sub> Na<sub>2</sub> (VO<sub>4</sub>)<sub>6</sub>
Keywords:
solid solution, conductivity, apatite, calcium, double lead sodium vanadate.Abstract
The formation of single-phase solid solutions Pb(8-x) Cax Na2 (VO4)6 in the range 0 <= x <= 3 was defined by X-ray powder diffraction and scanning electronic microscopy method when occurring the substitution lead for calcium in the structure of double lead sodium vanadate Pb8 Na2 (VO4)6. The conductivity of solid solution is decreased and the activation energy of conductivity is raised while increasing the degree of substitution lead for calcium.
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