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Title: Influence of interfacial coherency on ferroelectric switching of superlattice BaTiO3/SrTiO3

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4931129· OSTI ID:1274891
 [1];  [2];  [3];  [4];  [5];  [6];  [6]
  1. Univ. of Science and Technology Beijing, Beijing (China); The Pennsylvania State Univ., University Park, PA (United States)
  2. Univ. of Science and Technology Beijing, Beijing (China)
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  4. Univ. of Wisconsin Madison, Madison, WI (United States)
  5. Cornell Univ., Ithaca, NY (United States); Kavli Institute at Cornell for Nanoscale Science, Ithaca, NY (United States)
  6. The Pennsylvania State Univ., University Park, PA (United States)

Switching behavior of (BaTiO3)8/(SrTiO3)4 heterostructure superlattice grown on SrTiO3 substrate was studied by employing the phase field method. To investigate the constraint effect of the substrate on switching, three types of superlattice/substrate interface mechanical relaxation conditions were considered, i.e. the fully ommensurate, partially relaxed and fully relaxed. Our simulation results demonstrated that the hysteresis loops under the three types of constraints were very different. The interfacial coherency affects dramatically the coercivity and remanence of the superlattice films. The mechanism of the hysteresis loop varying with interfacial coherency was analyzed by the ferroelectric domain configuration and its evolution during the switching process. Finally, the hysteresis loop of fully relaxed superlattice shows application potential on ferroelectric energy storage materials.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1274891
Report Number(s):
PNNL-SA-106498
Journal Information:
Applied Physics Letters, Vol. 107, Issue 12; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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Cited By (4)

Large Polarization and Susceptibilities in Artificial Morphotropic Phase Boundary PbZr 1− x Ti x O 3 Superlattices journal January 2020
A thermodynamic potential, energy storage performances, and electrocaloric effects of Ba 1- x Sr x TiO 3 single crystals journal March 2018
Sr-induced dipole scatter in Ba x Sr 1 x TiO 3 : Insights from a transferable-bond valence-based interatomic potential journal November 2019
Pinning of a ferroelectric Bloch wall at a paraelectric layer journal January 2018

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