SINGLE-CRYSTAL K-X(ZNYTI8-Y)O-16 PRIDERITES - GROWTH AND CHARACTERIZATION

Single crystals of K-x(ZnyTi8-y)O-16 priderites have been grown from a melt of K2O-MoO3 using the flux-zone technique. High-purity crystals > 10 mm in length were obtained, with no indication of twinning. Latti ce parameters of a=1.0162(8) nm and c=0.2971(7) nm were obtained from X-ray diffraction measurements. Habit planes were identified from scan ning electron microscope images. X-ray photoelectron spectroscopy conf irmed the titanium oxidation state as +4. High-temperature complex imp edance spectroscopy between 300 and 820 K was used to electrically cha racterize the crystals. This indicated that the materials had a low d. c. conductivity and a conductivity of 1.68 x 10(-3) S cm(-1) at 100 kH z.