Growth, structure and characterization of solid solution Ca9Y(VO4)7-x(PO4)x single crystals

The Ca
₉
Y(VO
₄
)
₇
-x(PO
₄
)
_x
(X=0-7) solid solution samples of synthesized ceramics and single crystals grown by the Czochralski method were characterized by powder and single crystal X-ray diffraction and optical spectroscopy. The microhardness Hv and fracture toughness K
_1c
of solid solution single crystals were investigated.