Direct Observation of Ferrielectricity at Ferroelastic Domain Boundaries in CaTiO3 by Electron Microscopy

Sandra Van Aert; Stuart Turner; Rémi Delville; Dominique Schryvers; Gustaaf Van Tendeloo; Ekhard Salje; Marc Verwerft

doi:10.1002/adma.201103717

Direct Observation of Ferrielectricity at Ferroelastic Domain Boundaries in CaTiO3 by Electron Microscopy

Sandra Van Aert
, Stuart Turner
, Rémi Delville
, Dominique Schryvers
, Gustaaf Van Tendeloo
, Ekhard Salje
, Marc Verwerft

Research output › peer-review

Abstract

High-resolution aberration-corrected transmission electron microscopy aided by statistical parameter estimation theory is used to quantify localized displacements at a (110) twin boundary in orthorhombic CaTiO3. The displacements are 3–6 pm for the Ti atoms and confined to a thin layer. This is the first direct observation of the generation of ferroelectricity by interfaces inside this material which opens the door for domain boundary engineering.

Original language	English
Pages (from-to)	523-527
Journal	Advanced materials
Volume	24
Issue number	4
DOIs	https://doi.org/10.1002/adma.201103717
State	Published - 24 Jan 2012

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Cite this

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title = "Direct Observation of Ferrielectricity at Ferroelastic Domain Boundaries in CaTiO3 by Electron Microscopy",

abstract = "High-resolution aberration-corrected transmission electron microscopy aided by statistical parameter estimation theory is used to quantify localized displacements at a (110) twin boundary in orthorhombic CaTiO3. The displacements are 3–6 pm for the Ti atoms and confined to a thin layer. This is the first direct observation of the generation of ferroelectricity by interfaces inside this material which opens the door for domain boundary engineering.",

keywords = "ferroelastic domain boudaries, ferrielectricity, CaTiO3, quantitative aberration-corrected transmission electron microscopy, atomic displacements",

author = "\{Van Aert\}, Sandra and Stuart Turner and R{\'e}mi Delville and Dominique Schryvers and \{Van Tendeloo\}, Gustaaf and Ekhard Salje and Marc Verwerft",

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T1 - Direct Observation of Ferrielectricity at Ferroelastic Domain Boundaries in CaTiO3 by Electron Microscopy

AU - Van Aert, Sandra

AU - Turner, Stuart

AU - Delville, Rémi

AU - Schryvers, Dominique

AU - Van Tendeloo, Gustaaf

AU - Salje, Ekhard

A2 - Verwerft, Marc

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AB - High-resolution aberration-corrected transmission electron microscopy aided by statistical parameter estimation theory is used to quantify localized displacements at a (110) twin boundary in orthorhombic CaTiO3. The displacements are 3–6 pm for the Ti atoms and confined to a thin layer. This is the first direct observation of the generation of ferroelectricity by interfaces inside this material which opens the door for domain boundary engineering.

KW - ferroelastic domain boudaries

KW - ferrielectricity

KW - CaTiO3

KW - quantitative aberration-corrected transmission electron microscopy

KW - atomic displacements

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_119219

UR - http://knowledgecentre.sckcen.be/so2/bibref/8860

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JO - Advanced materials

JF - Advanced materials

IS - 4

ER -