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Title: Electric-field-induced structural changes in multilayer piezoelectric actuators during electrical and mechanical loading

Abstract

The effects of electrical and mechanical loading on the behavior of domains and phases in Multilayer Piezoelectric Actuators (MAs) is studied using in situ high-energy X-ray diffraction (XRD) and macroscopic property measurements. Rietveld refinement is carried out on measured diffraction patterns using a two-phase tetragonal (P4mm) and rhombohedral (R3m) model. Applying an electric field promotes the rhombohedral phase, while increasing compressive uniaxial pre-stress prior to electric field application favors the tetragonal phase. The competition between electrical and mechanical energy leads to a maximal difference between electric-field-induced phase fractions at 70 MPa pre-stress. Additionally, the available volume fraction of non-180° domain reorientation that can be accessed during electric field application increases with compressive pre-stress up to 70 MPa. The origin for enhanced strain and polarization with applied pre-stress is attributed to a combination of enhanced non-180° domain reorientation and electric-field-induced phase transitions. The suppression of both the electric-field-induced phase transitions and domain reorientation at high pre-stresses (>70 MPa) is attributed to a large mechanical energy barrier, and alludes to the competition of the electrical and mechanical energy within the MA during applied stimuli.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1394660
Alternate Identifier(s):
OSTI ID: 1356949
Grant/Contract Number:  
AC02-06CH11357; AC05-00OR22725
Resource Type:
Published Article
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Name: Acta Materialia Journal Volume: 132 Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; X-ray diffraction; Ferroelectrics; Electric field-induced phase transitions; PZT; Piezoactuator

Citation Formats

Esteves, Giovanni, Fancher, Chris M., Röhrig, Sören, Maier, Günther A., Jones, Jacob L., and Deluca, Marco. Electric-field-induced structural changes in multilayer piezoelectric actuators during electrical and mechanical loading. United States: N. p., 2017. Web. https://doi.org/10.1016/j.actamat.2017.04.014.
Esteves, Giovanni, Fancher, Chris M., Röhrig, Sören, Maier, Günther A., Jones, Jacob L., & Deluca, Marco. Electric-field-induced structural changes in multilayer piezoelectric actuators during electrical and mechanical loading. United States. https://doi.org/10.1016/j.actamat.2017.04.014
Esteves, Giovanni, Fancher, Chris M., Röhrig, Sören, Maier, Günther A., Jones, Jacob L., and Deluca, Marco. Thu . "Electric-field-induced structural changes in multilayer piezoelectric actuators during electrical and mechanical loading". United States. https://doi.org/10.1016/j.actamat.2017.04.014.
@article{osti_1394660,
title = {Electric-field-induced structural changes in multilayer piezoelectric actuators during electrical and mechanical loading},
author = {Esteves, Giovanni and Fancher, Chris M. and Röhrig, Sören and Maier, Günther A. and Jones, Jacob L. and Deluca, Marco},
abstractNote = {The effects of electrical and mechanical loading on the behavior of domains and phases in Multilayer Piezoelectric Actuators (MAs) is studied using in situ high-energy X-ray diffraction (XRD) and macroscopic property measurements. Rietveld refinement is carried out on measured diffraction patterns using a two-phase tetragonal (P4mm) and rhombohedral (R3m) model. Applying an electric field promotes the rhombohedral phase, while increasing compressive uniaxial pre-stress prior to electric field application favors the tetragonal phase. The competition between electrical and mechanical energy leads to a maximal difference between electric-field-induced phase fractions at 70 MPa pre-stress. Additionally, the available volume fraction of non-180° domain reorientation that can be accessed during electric field application increases with compressive pre-stress up to 70 MPa. The origin for enhanced strain and polarization with applied pre-stress is attributed to a combination of enhanced non-180° domain reorientation and electric-field-induced phase transitions. The suppression of both the electric-field-induced phase transitions and domain reorientation at high pre-stresses (>70 MPa) is attributed to a large mechanical energy barrier, and alludes to the competition of the electrical and mechanical energy within the MA during applied stimuli.},
doi = {10.1016/j.actamat.2017.04.014},
journal = {Acta Materialia},
number = C,
volume = 132,
place = {United States},
year = {2017},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.actamat.2017.04.014

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Cited by: 8 works
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