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Revealing nanoscale structural ordering by TEM/HRTEM. Application on PMN-PT relaxor ferroelectric

C. GHICA1,* , L. NISTOR1, G. VAN TENDELOO2

Affiliation

  1. National Institute of Materials Physics, Atomistilor 105 bis, 077125 Magurele, Ilfov, Romania
  2. University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium

Abstract

Nano-scale ordering may be revealed in transmission electron microscopy (TEM) by at least three techniques that will be presented in this work: selected area electron diffraction, conventional TEM and high-resolution TEM. Digital image processing is used to extract additional information from the high-resolution micrographs. The described methods are illustrated in a microstructural and compositional study of a 90%Pb(Mg1/3Nb2/3)O3-10%PbTiO2 ceramic sample. Highresolution images reveal the presence of ordered compositional nano-domains, observable in two specific crystallographic orientations. Antiphase boundaries lying in the (111) planes separate them, while (100) and (111) facets separate the ordered domains from the disordered matrix..

Keywords

Transmission electron microscopy, Digital image processing.

Submitted at: Feb. 25, 2008
Accepted at: Aug. 28, 2008

Citation

C. GHICA, L. NISTOR, G. VAN TENDELOO, Revealing nanoscale structural ordering by TEM/HRTEM. Application on PMN-PT relaxor ferroelectric, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 9, pp. 2328-2333 (2008)