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Quantitative high-dynamic-range electron diffraction of polar nanodomains in Pb2 ScTaO6

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Peters, Jonathan J. P., Sanchez, Ana M., Walker, David, Whatmore, Roger and Beanland, R. (2019) Quantitative high-dynamic-range electron diffraction of polar nanodomains in Pb2 ScTaO6. Advanced Materials, 31 (5). 1806498. doi:10.1002/adma.201806498 ISSN 0935-9648.

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Official URL: http://dx.doi.org/10.1002/adma.201806498

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Abstract

Highly B‐site ordered Pb2ScTaO6 crystals are studied as a function of temperature via dielectric spectroscopy and in situ high‐dynamic‐range electron diffraction. The degree of ordering is examined on the local and macroscopic scale and is determined to be 76%. Novel analysis of the electron diffraction patterns provides structural information with two types of antiferroelectric displacements determined to be present in the polar structure. It is then found that a low‐temperature transition occurs on cooling at ≈210 K that is not present on heating. This phenomenon is discussed in terms of the freezing of dynamic polar nanodomains where a high density of domain walls creates a metastable state.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Chemistry
Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Ferroelectric crystals, Perovskite
Journal or Publication Title: Advanced Materials
Publisher: Wiley
ISSN: 0935-9648
Official Date: 1 February 2019
Dates:
DateEvent
1 February 2019Published
6 December 2018Available
13 November 2018Accepted
Volume: 31
Number: 5
Article Number: 1806498
DOI: 10.1002/adma.201806498
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): This is the peer reviewed version of the following article: 'Peters, Jonathan J. P., Sanchez, Ana M., Walker, David, Whatmore, Roger and Beanland, Richard (2019) Quantitative high-dynamic-range electron diffraction of polar nanodomains in Pb2 ScTaO6. Advanced Materials. 1806498. doi:10.1002/adma.201806498', which has been published in final form at https://doi.org/10.1002/adma.201806498. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 10 December 2018
Date of first compliant Open Access: 6 December 2019
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/P031544/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266

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