Figure 2: X-ray diffraction patterns for [ R 2 O 3 ] π‘₯ β‹… [ T i O 2 ] 1 βˆ’ π‘₯ composites along with that of pure TiO2. (a) Polycrystalline samples prepared through solid state reaction route. (b) Nanocomposites synthesized by coprecipitation/hydrolysis. R: Rutile; A: Anatase; Y: Y2O3; Gd: Gd2O3; Yb: Yb2O3.