Local structure analysis of PbTiO₃ in high-temperature cubic phase

Abstract

High-energy X-ray diffraction study was performed on lead titanate (PbTiO₃). Short-range order structure was revealed using atomic pair-distribution function (PDF) method. In the high-temperature cubic phase, there is a large deviation between local and average structure. Especially, Pb atoms deviated from the cubic lattice framework, but establish Pb-O-Pb random network.

Keywords:

• perovskite, local structure, pair distribution function

Acknowledgments

The synchrotron radiation experiments were performed at BL14B1 in SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI Proposal Nos. 2018A3607).