The monoclinic phase of PZT ceramics: Raman and phenomenological theory studies

Details The monoclinic phase of PZT ceramics: Raman and phenomenological theory studies The monoclinic phase of PZT ceramics: Raman and phenomenological theory studies

1999-09-03

arxiv.org/abs/cond-mat/9909061v3

Physics

Condensed Matter

6 pages including 4 figures, Latex, submitted to Applied Physics Letters

Scientific paper

10.1103/PhysRevB.61.14283

This work reports on the first Raman detection of the tetragonal to monoclinic phase transition in PZT ceramics near morphotropic phase boundary at low temperatures. The transition is characterized by changes in the frequency of lattice modes with the temperature. The results presented here confirm the previous one recently reported by Noheda et al. using high-resolution synchrotron X-ray powder diffraction technique and dielectric measurements. The stability of the new phase is discussed within the framework of phenomenological Landau-Devonshire Theory.

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