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Title: High-resolution 2-D Bragg diffraction reveal heterogeneous domain transformation behavior in a bulk relaxor ferroelectric

Abstract

In-situ measurement of fine-structure of neutron Bragg diffraction peaks from a relaxor single-crystal using a time-of-flight instrument reveals highly heterogeneous mesoscale domain transformation behavior under applied electric fields. It is observed that only ∼25% of domains undergo reorientation or phase transition contributing to large average strains, while at least 40% remain invariant and exhibit microstrains. Such insights could be central for designing new relaxor materials with better performance and longevity. The current experimental technique can also be applied to resolve complex mesoscale phenomena in other functional materials.

Authors:
 [1]; ;  [2]
  1. Department of Physics and Materials Science, City University of Hong Kong, Kowloon (Hong Kong)
  2. Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
Publication Date:
OSTI Identifier:
22590468
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 9; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BRAGG REFLECTION; ELECTRIC FIELDS; FERROELECTRIC MATERIALS; FINE STRUCTURE; MONOCRYSTALS; NEUTRONS; PERFORMANCE; PHASE TRANSFORMATIONS; RESOLUTION; STRAINS; TIME-OF-FLIGHT METHOD

Citation Formats

Pramanick, Abhijit, E-mail: apramani@cityu.edu.hk, Stoica, Alexandru D., and An, Ke. High-resolution 2-D Bragg diffraction reveal heterogeneous domain transformation behavior in a bulk relaxor ferroelectric. United States: N. p., 2016. Web. doi:10.1063/1.4962270.
Pramanick, Abhijit, E-mail: apramani@cityu.edu.hk, Stoica, Alexandru D., & An, Ke. High-resolution 2-D Bragg diffraction reveal heterogeneous domain transformation behavior in a bulk relaxor ferroelectric. United States. doi:10.1063/1.4962270.
Pramanick, Abhijit, E-mail: apramani@cityu.edu.hk, Stoica, Alexandru D., and An, Ke. Mon . "High-resolution 2-D Bragg diffraction reveal heterogeneous domain transformation behavior in a bulk relaxor ferroelectric". United States. doi:10.1063/1.4962270.
@article{osti_22590468,
title = {High-resolution 2-D Bragg diffraction reveal heterogeneous domain transformation behavior in a bulk relaxor ferroelectric},
author = {Pramanick, Abhijit, E-mail: apramani@cityu.edu.hk and Stoica, Alexandru D. and An, Ke},
abstractNote = {In-situ measurement of fine-structure of neutron Bragg diffraction peaks from a relaxor single-crystal using a time-of-flight instrument reveals highly heterogeneous mesoscale domain transformation behavior under applied electric fields. It is observed that only ∼25% of domains undergo reorientation or phase transition contributing to large average strains, while at least 40% remain invariant and exhibit microstrains. Such insights could be central for designing new relaxor materials with better performance and longevity. The current experimental technique can also be applied to resolve complex mesoscale phenomena in other functional materials.},
doi = {10.1063/1.4962270},
journal = {Applied Physics Letters},
number = 9,
volume = 109,
place = {United States},
year = {Mon Aug 29 00:00:00 EDT 2016},
month = {Mon Aug 29 00:00:00 EDT 2016}
}