The monoclinic phase in PZT: new light on morphotropic phase boundaries

Details The monoclinic phase in PZT: new light on morphotropic phase boundaries The monoclinic phase in PZT: new light on morphotropic phase boundaries

2000-02-25

arxiv.org/abs/cond-mat/0002409v1

Physics

Condensed Matter

Materials Science

5 pages REVTeX file, 6 figures embedded. Presented at the Workshop on "Fundamental Physics of Ferroelectrics" held in Aspen, F

Scientific paper

10.1063/1.1324468

A summary of the work recently carried out on the morphotropic phase boundary (MPB) of PZT is presented. By means of x-ray powder diffraction on ceramic samples of excellent quality, the MPB has been successfully characterized by changing temperature in a series of closely spaced compositions. As a result, an unexpected monoclinic phase has been found to exist in between the well-known tetragonal and rhombohedral PZT phases. A detailed structural analysis, together with the investigation of the field effect in this region of compositions, have led to an important advance in understanding the mechanisms responsible for the physical properties of PZT as well as other piezoelectric materials with similar morphotropic phase boundaries.

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