shows the (a) $a, b$ and $c$ lattice parameters, (b) monoclinic angle ( $\beta$) and the (c) unit-cell volume of the synthesized materials. All those parameters increase linearly with the Ca amount, a clear evidence that the Vegard's law holds for this solid solution.
shows the (a) a, b and c lattice parameters, (b) monoclinic angle ( \beta) and the (c) unit-cell volume of the synthesized materials. All those parameters increase linearly with the Ca amount, a clear evidence that the Vegard’s law holds for this solid solution.