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Title: Depolarization mechanisms of PbZr{sub 0.52}Ti{sub 0.48}O{sub 3} and PbZr{sub 0.95}Ti{sub 0.05}O{sub 3} poled ferroelectrics under high strain rate loading

Stress-induced and thermal-induced depolarization studies along with X-ray diffraction were performed on lead zirconate titanate ferroelectrics of different compositions, PbZr{sub 0.52}Ti{sub 0.48}O{sub 3} (PZT 52/48) and PbZr{sub 0.95}Ti{sub 0.05}O{sub 3} (PZT 95/5). Specimens were shock loaded perpendicular to the polarization vector. It was found that the polarity of the stress-induced charge released by PZT 52/48 and 95/5 was opposite to the polarity of the charge generated due to the piezoelectric effect. PZT 52/48 was only partially (45%) depolarized under 1.5 ± 0.1 GPa mechanical compression, as opposed to PZT 95/5 which was fully depolarized. The experimental results indicate that the stress-induced depolarization mechanisms are different for these two compositions. PZT 52/48 is transformed to a state with lower polarization, while PZT 95/5 undergoes a phase transition to a non-polar antiferroelectric phase.
Authors:
;  [1] ;  [1] ;  [2] ;  [3] ; ; ;  [4]
  1. Loki Incorporated, Rolla, Missouri 65409 (United States)
  2. (United States)
  3. Pulsed Power LLC, Lubbock, Texas 79416 (United States)
  4. Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, Los Angeles, California 90095-1597 (United States)
Publication Date:
OSTI Identifier:
22300169
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 21; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPRESSION; DEPOLARIZATION; FERROELECTRIC MATERIALS; LEAD COMPOUNDS; PHASE TRANSFORMATIONS; PIEZOELECTRICITY; POLARIZATION; PRESSURE RANGE GIGA PA; PZT; STRAIN RATE; STRESSES; TITANATES; X-RAY DIFFRACTION; ZIRCONIUM COMPOUNDS