Abstract
The radial distribution function of rapidly quenched amorphous PbTiO3 with 10 mol% B2O3 was determined by the energy-dispersive X-ray diffraction method. The shortest Pb–Pb interatomic distance and its coordination number are 3.85(1) Å and 6.6(6) respectively. The second-shortest interatomic distance is not 21/2 times but 31/2 times that of the first. These facts suggest that the amorphous structure is different from that derived from the perovskite structure, the structure of the starting material; a possible basic structure of the amorphous state is a pyrochlore-like structure.
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