A distributed step-like switching model of the continuous field-driven phase transformations observed in PMN-xPT relaxor ferroelectric single crystals

Webber KG, Robinson HC, Rossetti GA, Lynch CS (2008)

Publication Status: Published

Publication Type: Journal article

Publication year: 2008

Journal

Acta Materialia Elsevier

Publisher: Elsevier

Book Volume: 56

Pages Range: 2744-2749

DOI: 10.1016/j.actamat.2008.02.006

Abstract

The field-driven phase transformation behavior of relaxor ferroelectric single crystal PZN-xPT is discontinuous and displays well-defined forward and reverse coercive fields, whereas the same transformation in PMN-xPT is nearly continuous and occurs over a range of field levels. In analogy to the broad Curie range in relaxor ferroelectrics arising from property fluctuations at the nanometer length scale, the continuous field-driven phase transformations in PMN-xPT are modeled as a step-like series of discontinuous transformations associated with similar spatial property fluctuations. An increase in the applied field gradually increases the volume fraction of the new phase at the expense of the old phase, resulting in a continuous transition between phases. The model simulation produces excellent agreement with the measured material response of < 011 > cut PMN-0.32PT single crystals under conditions of cooperative stress and electric field loading. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Authors with CRIS profile

Kyle Grant Webber Professur für Werkstoffwissenschaften (Funktionskeramik)

Involved external institutions

Naval Undersea Warfare Center (NUWC) US United States (USA) (US) University of California Los Angeles (UCLA) US United States (USA) (US) University of Connecticut US United States (USA) (US)

How to cite

APA:

Webber, K.G., Robinson, H.C., Rossetti, G.A., & Lynch, C.S. (2008). A distributed step-like switching model of the continuous field-driven phase transformations observed in PMN-xPT relaxor ferroelectric single crystals. Acta Materialia, 56, 2744-2749. https://doi.org/10.1016/j.actamat.2008.02.006

MLA:

Webber, Kyle Grant, et al. "A distributed step-like switching model of the continuous field-driven phase transformations observed in PMN-xPT relaxor ferroelectric single crystals." Acta Materialia 56 (2008): 2744-2749.

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