Microstructural observations on 1: 2 ordered domain boundaries in Ba(Mg1/3Ta2/3)O3

Hwack Joo Lee, Hyun Ryu, Sahn Nahm, Jae Dong Byun

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

High resolution transmission electron microscopy (HRTEM) has been used to investigate the detailed microstructures of the antiphase boundaries (APBs) of 1:2 B-site ordered domains in fully ordered Ba(Mg1/3Ta2/3)O3 ceramic compound. The orientation relationship (102)I // (012)II, [010]I // [100]II, was found between two domains. The ledged coherent interface has formed with (101) plane as an atomic habit plane. The growth ledge which possesses the kinks on ledge structure on the riser has the height of 1.22 nm which is equivalent to three (101) planes. The coalescence of the growth ledges and the generation of these ledges at the structurally faulted region had been found experimentally. New interface model which was coherent and had a growth ledge was constructed based on the experimentally obtained diffraction pattern and HRTEM images and thereafter the lateral growth by the ledge mechanism in the coarsening of ordered phase boundaries was proposed.

Original languageEnglish
Pages (from-to)103-110
Number of pages8
JournalMetals and Materials International
Volume4
Issue number2
Publication statusPublished - 1998 Dec 1

Fingerprint

ledges
High resolution transmission electron microscopy
Coarsening
Phase boundaries
Coalescence
Diffraction patterns
risers
transmission electron microscopy
antiphase boundaries
high resolution
habits
coalescing
Microstructure
diffraction patterns
ceramics
microstructure

Keywords

  • 1:2 ordering
  • Antiphase boundary
  • BMT
  • Coarsening
  • Complex perovskite
  • Ledged structure

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Microstructural observations on 1 : 2 ordered domain boundaries in Ba(Mg1/3Ta2/3)O3. / Lee, Hwack Joo; Ryu, Hyun; Nahm, Sahn; Byun, Jae Dong.

In: Metals and Materials International, Vol. 4, No. 2, 01.12.1998, p. 103-110.

Research output: Contribution to journalArticle

Lee, Hwack Joo ; Ryu, Hyun ; Nahm, Sahn ; Byun, Jae Dong. / Microstructural observations on 1 : 2 ordered domain boundaries in Ba(Mg1/3Ta2/3)O3. In: Metals and Materials International. 1998 ; Vol. 4, No. 2. pp. 103-110.
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