Crystal structure TiO2

For rutile, as a more complex oxide crystal structure, STM of TiO2(110) (Figure 15.23b) reveals also the occurrence of monoatomic steps only however, in this case, several different step directions and step terminations are possible [104]. 

According to this rule, rutile and, at high pressures, the modification with the cz-PbO2 structure are the most stable forms of TiO2. Numerous compounds crystallize in the rutile type and some in the a-PbO2 type, whereas scarcely any examples are known for the brookite and the anatase structures. 

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