Identification of crystalline elastic anisotropy in PZT ceramics from in-situ blocking stress measurements

Daniel L, Hall DA, Webber KG, King A, Withers PJ (2014)

Publication Status: Published

Publication Type: Journal article

Publication year: 2014

Journal

Journal of Applied Physics AIP Publishing

Publisher: American Institute of Physics (AIP)

Book Volume: 115

DOI: 10.1063/1.4874222

Abstract

High energy x-ray diffraction measurements of lattice strains were performed on a rhombohedral Lead Zirconate Titanate ceramic (PZT 55-45) under combinations of applied electric field and compressive stress. These measurements allow the construction of blocking stress curves for different sets of crystallographic orientations which reflect the single crystal elastic anisotropy. A micro-mechanical interpretation of the results is then proposed. Assuming cubic symmetry for the crystalline elastic stiffness tensor and isotropy for the macroscopic elastic properties, the elastic properties of the single crystal are extracted from the measured data. An anisotropy ratio close to 0.3 is found (compared to 1 for isotropic materials). The high level of anisotropy found in this work suggests that crystalline elastic anisotropy should not be neglected in the modelling of ferroelectric materials. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

Authors with CRIS profile

Kyle Grant Webber Professur für Werkstoffwissenschaften (Funktionskeramik)

Involved external institutions

University of Manchester GB United Kingdom (GB) European Synchrotron Radiation Facility (ESRF) FR France (FR)

How to cite

APA:

Daniel, L., Hall, D.A., Webber, K.G., King, A., & Withers, P.J. (2014). Identification of crystalline elastic anisotropy in PZT ceramics from in-situ blocking stress measurements. Journal of Applied Physics, 115. https://doi.org/10.1063/1.4874222

MLA:

Daniel, L., et al. "Identification of crystalline elastic anisotropy in PZT ceramics from in-situ blocking stress measurements." Journal of Applied Physics 115 (2014).

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