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Title: The contribution of 180° domain wall motion to dielectric properties quantified from in situ X-ray diffraction

Here, the contribution of 180° domain wall motion to polarization and dielectric properties of ferroelectric materials has yet to be determined experimentally. In this paper, an approach for estimating the extent of (180°) domain reversal during application of electric fields is presented. We demonstrate this method by determining the contribution of domain reversal to polarization in soft lead zirconate titanate during application of strong electric fields. At the maximum applied field, domain reversal was determined to account for >80% of the measured macroscopic polarization. We also apply the method to quantify the contribution of domain reversal to the weak-field dielectric permittivity of BaTiO 3. The results of this analysis determined that domain reversal accounts for up to ~70% of the macroscopic dielectric permittivity in BaTiO 3. These results demonstrate the predominance of domain reversal to high and low-field dielectric response in ferroelectric polycrystalline materials.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [3] ;  [6] ;  [2] ;  [3]
  1. North Carolina State Univ., Raleigh, NC (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Georgia Inst. of Technology, Atlanta, GA (United States)
  3. North Carolina State Univ., Raleigh, NC (United States)
  4. Materials Center Leoben Forschung GmbH, Leoben (Austria); Voestalpine Schienen GmbH, Leoben (Austria)
  5. Jozef Stefan Institute, Ljubljana (Slovenia)
  6. North Carolina State Univ., Raleigh, NC (United States); Institut fur Strukur- und Funktionskeramik, Leoben (Austria)
Publication Date:
Grant/Contract Number:
AC05-00OR22725; AC02-06CH11357
Type:
Published Article
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 126; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; In situ X-ray diffraction; 180° domain reversal; domain wall motion; non-linear piezoelectric; non-linear dielectric
OSTI Identifier:
1392177
Alternate Identifier(s):
OSTI ID: 1342700