Structure study of amorphous lead titanate by the energy-dispersive X-ray diffraction method

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.

Effects of Glass Elements on the Structural Evolution ofin situGrown Ferroelectric Perovskite Crystals in Sol-gel Derived Glass-ceramics

“…The structural similarities between Pb 2 Ti 2 O 61x phase and lead titanium based glass phase have been confirmed by Ozawa and Uno using the energy-dispersive x-ray diffraction method, 43 and the structural similarities between the Ba 2 TiSi 2 O 8 phase and its glass counterpart have been confirmed by Markgraf and Sharma using Raman spectroscopy. w. It is seen from (2) that two opposite processes occur at the same time in the annealing procedure, i.e., the growth of ferroelectric crystallites from the glass matrix, and the incorporation of glass elements, especially for Si, into the crystalline structure, then partially moving out from the crystalline structure.…”

PEDX: a program for radial-distribution-function analysis of energy-dispersive X-ray diffraction data from disordered systems

“…Tamura (1990) and Hosokawa, Matsuoka & Tamura (1991) have employed the EDXD method in a high-pressure study of the structure of liquid selenium and mercury. Radial distribution analysis of a series of oxide glasses has been carried out by Ozawa & Uno (1986), Hanson & Egami (1986) and McKeown (1987). Structural studies of various metallic glasses have been reported by Egami (1978Egami ( , 1979 and Aur & Egami (1980).…”