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

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

doi:10.1007/BF03026026

Microstructural observations on 1:2 ordered domain boundaries in Ba(Mg_1/3Ta_2/3)O₃

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

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(Mg_1/3Ta_2/3)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 language	English
Pages (from-to)	103-110
Number of pages	8
Journal	Metals and Materials International
Volume	4
Issue number	2
DOIs	https://doi.org/10.1007/BF03026026
Publication status	Published - 1998

Keywords

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

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/BF03026026

Cite this

@article{dca3593d01544cabbc4ed78f375a63d5,

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

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.",

keywords = "1:2 ordering, Antiphase boundary, BMT, Coarsening, Complex perovskite, Ledged structure",

author = "Lee, {Hwack Joo} and Hyun Ryu and Sahn Nahm and Byun, {Jae Dong}",

note = "Funding Information: This work was supported by the Korean Ministy of Science and Technology through a project for the reinforcement of new materials evaluation techniques in 1997.",

year = "1998",

doi = "10.1007/BF03026026",

language = "English",

volume = "4",

pages = "103--110",

journal = "Metals and Materials International",

issn = "1598-9623",

publisher = "Korean Institute of Metals and Materials",

number = "2",

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T1 - Microstructural observations on 1:2 ordered domain boundaries in Ba(Mg1/3Ta2/3)O3

AU - Lee, Hwack Joo

AU - Ryu, Hyun

AU - Nahm, Sahn

AU - Byun, Jae Dong

N1 - Funding Information: This work was supported by the Korean Ministy of Science and Technology through a project for the reinforcement of new materials evaluation techniques in 1997.

PY - 1998

Y1 - 1998

N2 - 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.

AB - 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.

KW - 1:2 ordering

KW - Antiphase boundary

KW - BMT

KW - Coarsening

KW - Complex perovskite

KW - Ledged structure

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