Abstract

Microstructures of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite dielectric ceramics with and without a boron additive have been observed by atomic resolution transmission electron microscopy (TEM). The selected area electron diffraction and lattice image show a well-ordered structure with hexagonal symmetry (lattice constants of a∼5.8 Å and c∼7.1 Å) in the ordered Ba(Cd 1/3Ta 2/3)O 3 with a boron additive, which is similar to those in ordered Ba(Zn 1/3Ta 2/3)O 3 and Ba(Mg 1/3Ta 2/3)O 3 ceramics. Ordered domains with a twin crystallographic relationship and high-density domain interfaces induced by ordering were observed in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive sintered at a relatively high temperature. Atomic resolution TEM further revealed the conservative twin boundaries along (001) and (110) planes and non-conservative antiphase boundaries with a projected displacement vector of the type [001] in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive. Finally, the energetics of different domain interfaces are discussed with the interfacial structures in ordered Ba(Cd 1/3Ta 2/3)O 3 ceramics revealed by an electron microscope.

Original languageEnglish (US)
Pages (from-to)1047-1052
Number of pages6
JournalJournal of the American Ceramic Society
Volume89
Issue number3
DOIs
StatePublished - Mar 2006

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Boron
Perovskite
Transmission electron microscopy
Microstructure
Electron diffraction
Lattice constants
Electron microscopes
perovskite
Temperature

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

@article{1a22218079274162a65b0767fbc9367c,
title = "Atomic resolution transmission electron microscopy of the microstructure of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite ceramics",
abstract = "Microstructures of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite dielectric ceramics with and without a boron additive have been observed by atomic resolution transmission electron microscopy (TEM). The selected area electron diffraction and lattice image show a well-ordered structure with hexagonal symmetry (lattice constants of a∼5.8 {\AA} and c∼7.1 {\AA}) in the ordered Ba(Cd 1/3Ta 2/3)O 3 with a boron additive, which is similar to those in ordered Ba(Zn 1/3Ta 2/3)O 3 and Ba(Mg 1/3Ta 2/3)O 3 ceramics. Ordered domains with a twin crystallographic relationship and high-density domain interfaces induced by ordering were observed in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive sintered at a relatively high temperature. Atomic resolution TEM further revealed the conservative twin boundaries along (001) and (110) planes and non-conservative antiphase boundaries with a projected displacement vector of the type [001] in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive. Finally, the energetics of different domain interfaces are discussed with the interfacial structures in ordered Ba(Cd 1/3Ta 2/3)O 3 ceramics revealed by an electron microscope.",
author = "J. Sun and Shaojun Liu and Nathan Newman and David Smith",
year = "2006",
month = "3",
doi = "10.1111/j.1551-2916.2005.00800.x",
language = "English (US)",
volume = "89",
pages = "1047--1052",
journal = "Journal of the American Ceramic Society",
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TY - JOUR

T1 - Atomic resolution transmission electron microscopy of the microstructure of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite ceramics

AU - Sun, J.

AU - Liu, Shaojun

AU - Newman, Nathan

AU - Smith, David

PY - 2006/3

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N2 - Microstructures of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite dielectric ceramics with and without a boron additive have been observed by atomic resolution transmission electron microscopy (TEM). The selected area electron diffraction and lattice image show a well-ordered structure with hexagonal symmetry (lattice constants of a∼5.8 Å and c∼7.1 Å) in the ordered Ba(Cd 1/3Ta 2/3)O 3 with a boron additive, which is similar to those in ordered Ba(Zn 1/3Ta 2/3)O 3 and Ba(Mg 1/3Ta 2/3)O 3 ceramics. Ordered domains with a twin crystallographic relationship and high-density domain interfaces induced by ordering were observed in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive sintered at a relatively high temperature. Atomic resolution TEM further revealed the conservative twin boundaries along (001) and (110) planes and non-conservative antiphase boundaries with a projected displacement vector of the type [001] in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive. Finally, the energetics of different domain interfaces are discussed with the interfacial structures in ordered Ba(Cd 1/3Ta 2/3)O 3 ceramics revealed by an electron microscope.

AB - Microstructures of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite dielectric ceramics with and without a boron additive have been observed by atomic resolution transmission electron microscopy (TEM). The selected area electron diffraction and lattice image show a well-ordered structure with hexagonal symmetry (lattice constants of a∼5.8 Å and c∼7.1 Å) in the ordered Ba(Cd 1/3Ta 2/3)O 3 with a boron additive, which is similar to those in ordered Ba(Zn 1/3Ta 2/3)O 3 and Ba(Mg 1/3Ta 2/3)O 3 ceramics. Ordered domains with a twin crystallographic relationship and high-density domain interfaces induced by ordering were observed in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive sintered at a relatively high temperature. Atomic resolution TEM further revealed the conservative twin boundaries along (001) and (110) planes and non-conservative antiphase boundaries with a projected displacement vector of the type [001] in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive. Finally, the energetics of different domain interfaces are discussed with the interfacial structures in ordered Ba(Cd 1/3Ta 2/3)O 3 ceramics revealed by an electron microscope.

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