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Direct observation of ferrielectricity at ferroelastic domain boundaries in CaTiO3 by electron microscopy.
Van Aert, Sandra; Turner, Stuart; Delville, Rémi; Schryvers, Dominique; Van Tendeloo, Gustaaf; Salje, Ekhard K H.
Affiliation
  • Van Aert S; Electron Microscopy for Materials Research (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium. sandra.vanaert@ua.ac.be
Adv Mater ; 24(4): 523-7, 2012 Jan 24.
Article in En | MEDLINE | ID: mdl-22223264
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 CaTiO(3). 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.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Oxides / Titanium / Calcium Compounds / Microscopy, Electron, Transmission / Electricity Language: En Journal: Adv Mater Journal subject: BIOFISICA / QUIMICA Year: 2012 Document type: Article Affiliation country: Belgium Publication country: ALEMANHA / ALEMANIA / DE / DEUSTCHLAND / GERMANY
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Oxides / Titanium / Calcium Compounds / Microscopy, Electron, Transmission / Electricity Language: En Journal: Adv Mater Journal subject: BIOFISICA / QUIMICA Year: 2012 Document type: Article Affiliation country: Belgium Publication country: ALEMANHA / ALEMANIA / DE / DEUSTCHLAND / GERMANY