Incorporation of dysprosium ions into PbTiO3 ferroelectric ceramic system

Abstract

A structural analysis concerning the incorporation of dysprosium into A- and/or B-sites of the lead titanate is shown. The two "boundary" refinements are presented, i.e., Dy2+ substitutes for Pb2+ (Dy3+ substitutes for Ti4+) and Dy3+ substitutes for Pb2+ (Dy3+ substitutes for Ti4+). The results offer quantitative information about the incorporation into both crystallographic sites. The increase of Dy3+ fraction into B-site provides the increase of the Ti4+ atomic displacement along the [001] direction and the tetragonal distortion.

Keywords

• Lead titanate
• lanthanides
• perovskites
• crystalline structure