Two types of domain boundaries in lanthanum magnesium niobate

Hwack Joo Lee; Hyun Min Park; Yang Koo Cho; Yong Won Song; Jong Hoo Paik; Sahn Nahm; Jae Dong Byun

doi:10.1111/j.1151-2916.2000.tb01651.x

Two types of domain boundaries in lanthanum magnesium niobate

Hwack Joo Lee, Hyun Min Park, Yang Koo Cho, Yong Won Song, Jong Hoo Paik, Sahn Nahm, Jae Dong Byun

Department of Materials Science and Engineering

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

Abstract

Microstructural studies of the domain boundaries in the complex perovskite compound lanthanum magnesium niobate (La[Mg_2/3Nb_1/3]O₃, LMN) were conducted using transmission electron microscopy. Both the 1:1 chemical ordering of B-site cations and the tilting of oxygen octahedra affected the domain boundaries. Two types of domain boundaries were observed. In addition to the presence of antiphase boundaries, which were insensitive to the crystallographic planes, ferroelastic domain boundaries that were caused by the phase transition due to the tilting of oxygen octahedra also were present. In some grains, only one type of oxygen tilting was present, which resulted in a single domain in one grain. Two or three domains were observed in a grain where the walls were parallel to the {110} plane. Many domains also were observed in a grain that had boundaries whose linear characteristics were gradually reduced.

Original language	English
Pages (from-to)	2875-2877
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	83
Issue number	11
DOIs	https://doi.org/10.1111/j.1151-2916.2000.tb01651.x
Publication status	Published - 2000

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.2000.tb01651.x

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title = "Two types of domain boundaries in lanthanum magnesium niobate",

abstract = "Microstructural studies of the domain boundaries in the complex perovskite compound lanthanum magnesium niobate (La[Mg2/3Nb1/3]O3, LMN) were conducted using transmission electron microscopy. Both the 1:1 chemical ordering of B-site cations and the tilting of oxygen octahedra affected the domain boundaries. Two types of domain boundaries were observed. In addition to the presence of antiphase boundaries, which were insensitive to the crystallographic planes, ferroelastic domain boundaries that were caused by the phase transition due to the tilting of oxygen octahedra also were present. In some grains, only one type of oxygen tilting was present, which resulted in a single domain in one grain. Two or three domains were observed in a grain where the walls were parallel to the {110} plane. Many domains also were observed in a grain that had boundaries whose linear characteristics were gradually reduced.",

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AU - Lee, Hwack Joo

AU - Park, Hyun Min

AU - Cho, Yang Koo

AU - Song, Yong Won

AU - Paik, Jong Hoo

AU - Nahm, Sahn

AU - Byun, Jae Dong

PY - 2000

Y1 - 2000

N2 - Microstructural studies of the domain boundaries in the complex perovskite compound lanthanum magnesium niobate (La[Mg2/3Nb1/3]O3, LMN) were conducted using transmission electron microscopy. Both the 1:1 chemical ordering of B-site cations and the tilting of oxygen octahedra affected the domain boundaries. Two types of domain boundaries were observed. In addition to the presence of antiphase boundaries, which were insensitive to the crystallographic planes, ferroelastic domain boundaries that were caused by the phase transition due to the tilting of oxygen octahedra also were present. In some grains, only one type of oxygen tilting was present, which resulted in a single domain in one grain. Two or three domains were observed in a grain where the walls were parallel to the {110} plane. Many domains also were observed in a grain that had boundaries whose linear characteristics were gradually reduced.

AB - Microstructural studies of the domain boundaries in the complex perovskite compound lanthanum magnesium niobate (La[Mg2/3Nb1/3]O3, LMN) were conducted using transmission electron microscopy. Both the 1:1 chemical ordering of B-site cations and the tilting of oxygen octahedra affected the domain boundaries. Two types of domain boundaries were observed. In addition to the presence of antiphase boundaries, which were insensitive to the crystallographic planes, ferroelastic domain boundaries that were caused by the phase transition due to the tilting of oxygen octahedra also were present. In some grains, only one type of oxygen tilting was present, which resulted in a single domain in one grain. Two or three domains were observed in a grain where the walls were parallel to the {110} plane. Many domains also were observed in a grain that had boundaries whose linear characteristics were gradually reduced.

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ER -

Two types of domain boundaries in lanthanum magnesium niobate

Abstract

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