Zirconium titanate-stannate pigments were synthesised in rounded to sub-euhedral prismatic crystallites, mostly
ranging from 2 to 8 mm in size with an aspect ratio between 1.0 and 1.8 (Fig. 1).
These compounds have the same srilankite-type disordered structure of the undoped ZrTi0.5Sn0.5O4, implying a
random distribution of Zr, Ti, Sn and dopants in a unique octahedral site (Fig. 2). It is so confirmed the role of tin and
dopants in the low temperature stabilisation of the high temperature disordered phase [2,6,7].
The addition of vanadium plus aluminium, indium or yttrium provoked some significant changes in the
crystallographic parameters with respect to the ZrTi0.5Sn0.5O4. In fact, a noticeable increase of the unit-cell volume
occurred, connected with a strong growth of the dimension a, a limited increase of the parameter c and nearly steady
values for b (Table 1).
Zirconium titanate-stannate pigments were synthesised in rounded to sub-euhedral prismatic crystallites, mostlyranging from 2 to 8 mm in size with an aspect ratio between 1.0 and 1.8 (Fig. 1).These compounds have the same srilankite-type disordered structure of the undoped ZrTi0.5Sn0.5O4, implying arandom distribution of Zr, Ti, Sn and dopants in a unique octahedral site (Fig. 2). It is so confirmed the role of tin anddopants in the low temperature stabilisation of the high temperature disordered phase [2,6,7].The addition of vanadium plus aluminium, indium or yttrium provoked some significant changes in thecrystallographic parameters with respect to the ZrTi0.5Sn0.5O4. In fact, a noticeable increase of the unit-cell volumeoccurred, connected with a strong growth of the dimension a, a limited increase of the parameter c and nearly steadyvalues for b (Table 1).
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