Elastic softening and polarization memory in PZN-PT relaxor ferroelectrics

Farnsworth, S. M. and Kisi, E. H. and Carpenter, M. A. (2011) Elastic softening and polarization memory in PZN-PT relaxor ferroelectrics. Physical Review B, 84 (17). p. 174124. DOI 10.1103/PhysRevB.84.174124

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Abstract

Substantial elastic softening in the cubic phase of PZN-PT relaxor ferroelectric crystals is observed as a large hysteresis between the RUS frequencies from poled and depoled crystals. This is due to static switchable polar nanoregions (PNR) at T*, well below the conventional Burns temperature but ∼50 K above the ferroelectric transition. Elastic softening due to polarization of the PNR shows polarization memory through two phase transitions and is greater than the softening associated with polarization of the ferroelectric phases. This emphasizes that PNR dominate the material properties at all temperatures below T*.

Item Type: Article
Uncontrolled Keywords: 2011AREP; IA63;
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Physical Review B
Volume: 84
Page Range: p. 174124
Identification Number: 10.1103/PhysRevB.84.174124
Depositing User: Sarah Humbert
Date Deposited: 21 Jan 2012 15:38
Last Modified: 23 Jul 2013 10:03
URI: http://eprints.esc.cam.ac.uk/id/eprint/2346

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