Microstructure Characterizations in Calcium Magnesium Niobate

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

doi:10.1111/j.1151-2916.2001.tb00888.x

Microstructure Characterizations in Calcium Magnesium Niobate

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

Department of Materials Science and Engineering

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

15 Citations (Scopus)

Abstract

Microstructural studies on the domain boundaries in Ca(Mg_1/3Nb_2/3)O₃ (CMN) complex perovskite compound were conducted using X-ray diffractometry and transmission electron microscopy. The 1:2 chemical ordering of B-site cations and the tilting of oxygen octahedra were involved in the CMN microstructure, as inferred from the presence of two types of domain boundaries. One type was the antiphase boundaries (APBs), which did not lie on a specific set of crystallographic planes. These boundaries were caused by the chemical 1:2 ordering of B-site cations, magnesium and niobium. The other type was the ferroelastic domain boundaries, which were parallel to a certain crystallographic plane. Therefore, CMN had the 1:2 ordered monoclinic unit cell distorted by the antiphase or in-phase tilting of oxygen octahedra. CMN had the mixed phases rather than the homogeneous phase.

Original language	English
Pages (from-to)	1632-1636
Number of pages	5
Journal	Journal of the American Ceramic Society
Volume	84
Issue number	7
DOIs	https://doi.org/10.1111/j.1151-2916.2001.tb00888.x
Publication status	Published - 2001 Jul

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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title = "Microstructure Characterizations in Calcium Magnesium Niobate",

abstract = "Microstructural studies on the domain boundaries in Ca(Mg1/3Nb2/3)O3 (CMN) complex perovskite compound were conducted using X-ray diffractometry and transmission electron microscopy. The 1:2 chemical ordering of B-site cations and the tilting of oxygen octahedra were involved in the CMN microstructure, as inferred from the presence of two types of domain boundaries. One type was the antiphase boundaries (APBs), which did not lie on a specific set of crystallographic planes. These boundaries were caused by the chemical 1:2 ordering of B-site cations, magnesium and niobium. The other type was the ferroelastic domain boundaries, which were parallel to a certain crystallographic plane. Therefore, CMN had the 1:2 ordered monoclinic unit cell distorted by the antiphase or in-phase tilting of oxygen octahedra. CMN had the mixed phases rather than the homogeneous phase.",

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AU - Lee, Hwack Joo

AU - Park, Hyun Min

AU - Cho, Yang Koo

AU - Song, Yong Won

AU - Nahm, Sahn

AU - Byun, Jae Dong

PY - 2001/7

Y1 - 2001/7

N2 - Microstructural studies on the domain boundaries in Ca(Mg1/3Nb2/3)O3 (CMN) complex perovskite compound were conducted using X-ray diffractometry and transmission electron microscopy. The 1:2 chemical ordering of B-site cations and the tilting of oxygen octahedra were involved in the CMN microstructure, as inferred from the presence of two types of domain boundaries. One type was the antiphase boundaries (APBs), which did not lie on a specific set of crystallographic planes. These boundaries were caused by the chemical 1:2 ordering of B-site cations, magnesium and niobium. The other type was the ferroelastic domain boundaries, which were parallel to a certain crystallographic plane. Therefore, CMN had the 1:2 ordered monoclinic unit cell distorted by the antiphase or in-phase tilting of oxygen octahedra. CMN had the mixed phases rather than the homogeneous phase.

AB - Microstructural studies on the domain boundaries in Ca(Mg1/3Nb2/3)O3 (CMN) complex perovskite compound were conducted using X-ray diffractometry and transmission electron microscopy. The 1:2 chemical ordering of B-site cations and the tilting of oxygen octahedra were involved in the CMN microstructure, as inferred from the presence of two types of domain boundaries. One type was the antiphase boundaries (APBs), which did not lie on a specific set of crystallographic planes. These boundaries were caused by the chemical 1:2 ordering of B-site cations, magnesium and niobium. The other type was the ferroelastic domain boundaries, which were parallel to a certain crystallographic plane. Therefore, CMN had the 1:2 ordered monoclinic unit cell distorted by the antiphase or in-phase tilting of oxygen octahedra. CMN had the mixed phases rather than the homogeneous phase.

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Microstructure Characterizations in Calcium Magnesium Niobate

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