Non-180° domains formation mechanism in LiTaO3 grains of an Al2O3/LiTaO3 composite

Youfeng Zhang; Yu Zhou; Dechang Jia; Qingchang Meng; Yangai Liu; Hua Ke

doi:10.1016/j.ceramint.2008.03.010

Non-180° domains formation mechanism in LiTaO₃ grains of an Al₂O₃/LiTaO₃ composite

Youfeng Zhang
, Yu Zhou
, Dechang Jia^*
, Qingchang Meng
, Yangai Liu
, Hua Ke

^*Corresponding author for this work

Harbin Institute of Technology
China University of Geosciences, Beijing

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

4 Scopus citations

Abstract

High density (>99.5%) Al₂O₃/LiTaO₃ (ALT) composite was obtained by hot pressing at 1300 °C/25 MPa in nitrogen atmosphere. The microstructure, which included a domain structure in LiTaO₃ grains, was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Most of the domains observed in LiTaO₃ grains of the Al₂O₃/LiTaO₃ (ALT) composites belong to a non-180° type domain, which cannot exist in LiTaO₃ single crystals. This non-symmetry domain microstructure belongs to ferroelectric twinning with { over(1, ̄) 0 1 2 } twin composition plane. The non-180° domains formation mechanism was proposed.

Original language	English
Pages (from-to)	949-952
Number of pages	4
Journal	Ceramics International
Volume	35
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2008.03.010
State	Published - Apr 2009

Keywords

A. Hot pressing
B. Composites
B. Electron microscopy
D. AlO
LiTaO

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10.1016/j.ceramint.2008.03.010

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@article{45c3bf2b36b34ab58b64a7713a38249a,

title = "Non-180° domains formation mechanism in LiTaO3 grains of an Al2O3/LiTaO3 composite",

abstract = "High density (>99.5\%) Al2O3/LiTaO3 (ALT) composite was obtained by hot pressing at 1300 °C/25 MPa in nitrogen atmosphere. The microstructure, which included a domain structure in LiTaO3 grains, was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Most of the domains observed in LiTaO3 grains of the Al2O3/LiTaO3 (ALT) composites belong to a non-180° type domain, which cannot exist in LiTaO3 single crystals. This non-symmetry domain microstructure belongs to ferroelectric twinning with \{ over(1,{\= }) 0 1 2 \} twin composition plane. The non-180° domains formation mechanism was proposed.",

keywords = "A. Hot pressing, B. Composites, B. Electron microscopy, D. AlO, LiTaO",

author = "Youfeng Zhang and Yu Zhou and Dechang Jia and Qingchang Meng and Yangai Liu and Hua Ke",

year = "2009",

month = apr,

doi = "10.1016/j.ceramint.2008.03.010",

language = "英语",

volume = "35",

pages = "949--952",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

number = "3",

}

TY - JOUR

T1 - Non-180° domains formation mechanism in LiTaO3 grains of an Al2O3/LiTaO3 composite

AU - Zhang, Youfeng

AU - Zhou, Yu

AU - Jia, Dechang

AU - Meng, Qingchang

AU - Liu, Yangai

AU - Ke, Hua

PY - 2009/4

Y1 - 2009/4

N2 - High density (>99.5%) Al2O3/LiTaO3 (ALT) composite was obtained by hot pressing at 1300 °C/25 MPa in nitrogen atmosphere. The microstructure, which included a domain structure in LiTaO3 grains, was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Most of the domains observed in LiTaO3 grains of the Al2O3/LiTaO3 (ALT) composites belong to a non-180° type domain, which cannot exist in LiTaO3 single crystals. This non-symmetry domain microstructure belongs to ferroelectric twinning with { over(1, ̄) 0 1 2 } twin composition plane. The non-180° domains formation mechanism was proposed.

AB - High density (>99.5%) Al2O3/LiTaO3 (ALT) composite was obtained by hot pressing at 1300 °C/25 MPa in nitrogen atmosphere. The microstructure, which included a domain structure in LiTaO3 grains, was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Most of the domains observed in LiTaO3 grains of the Al2O3/LiTaO3 (ALT) composites belong to a non-180° type domain, which cannot exist in LiTaO3 single crystals. This non-symmetry domain microstructure belongs to ferroelectric twinning with { over(1, ̄) 0 1 2 } twin composition plane. The non-180° domains formation mechanism was proposed.

KW - A. Hot pressing

KW - B. Composites

KW - B. Electron microscopy

KW - D. AlO

KW - LiTaO

UR - https://www.scopus.com/pages/publications/59349087280

U2 - 10.1016/j.ceramint.2008.03.010

DO - 10.1016/j.ceramint.2008.03.010

M3 - 文章

AN - SCOPUS:59349087280

SN - 0272-8842

VL - 35

SP - 949

EP - 952

JO - Ceramics International

JF - Ceramics International

IS - 3

ER -

Non-180° domains formation mechanism in LiTaO₃ grains of an Al₂O₃/LiTaO₃ composite

Abstract

Keywords

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