Growth of shaped 12CaO×7Al2O3 crystals by the micro-pulling down method

Lijuan Liu; Yuji Kagamitani; Dirk Ehrentraut; Chiaki Yokoyama; Tsuguo Fukuda

doi:10.1016/j.jcrysgro.2008.09.032

Growth of shaped 12CaO×7Al₂O₃ crystals by the micro-pulling down method

Lijuan Liu, Yuji Kagamitani, Dirk Ehrentraut, Chiaki Yokoyama, Tsuguo Fukuda

Division of Inorganic Material Research

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

5 Citations (Scopus)

Abstract

12CaO×7Al₂O₃ (C12A7) single crystals have been successfully grown by the micro-pulling down method for the first time. Single and transparent C12A7 crystal was obtained with radio-frequency heating μ-PD system. Phase stability is discussed as a function of oxygen concentration in the growth atmosphere. A minimum 1.0 Vol% O₂ with nitrogen atmosphere yields C12A7 phase. The distribution of Ca, Al and O elements at cross-section part was investigated by the electron probe microanalysis. The crystal composition deviation could be controlled by reducing O₂ gas concentration to 1.0 Vol%.

Original language	English
Pages (from-to)	518-521
Number of pages	4
Journal	Journal of Crystal Growth
Volume	311
Issue number	3
DOIs	https://doi.org/10.1016/j.jcrysgro.2008.09.032
Publication status	Published - 2009 Jan 15

Keywords

A1. Crystal morphology
A2. Growth from melt
B1. Oxides

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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title = "Growth of shaped 12CaO×7Al2O3 crystals by the micro-pulling down method",

abstract = "12CaO×7Al2O3 (C12A7) single crystals have been successfully grown by the micro-pulling down method for the first time. Single and transparent C12A7 crystal was obtained with radio-frequency heating μ-PD system. Phase stability is discussed as a function of oxygen concentration in the growth atmosphere. A minimum 1.0 Vol% O2 with nitrogen atmosphere yields C12A7 phase. The distribution of Ca, Al and O elements at cross-section part was investigated by the electron probe microanalysis. The crystal composition deviation could be controlled by reducing O2 gas concentration to 1.0 Vol%.",

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T1 - Growth of shaped 12CaO×7Al2O3 crystals by the micro-pulling down method

AU - Liu, Lijuan

AU - Kagamitani, Yuji

AU - Ehrentraut, Dirk

AU - Yokoyama, Chiaki

AU - Fukuda, Tsuguo

PY - 2009/1/15

Y1 - 2009/1/15

N2 - 12CaO×7Al2O3 (C12A7) single crystals have been successfully grown by the micro-pulling down method for the first time. Single and transparent C12A7 crystal was obtained with radio-frequency heating μ-PD system. Phase stability is discussed as a function of oxygen concentration in the growth atmosphere. A minimum 1.0 Vol% O2 with nitrogen atmosphere yields C12A7 phase. The distribution of Ca, Al and O elements at cross-section part was investigated by the electron probe microanalysis. The crystal composition deviation could be controlled by reducing O2 gas concentration to 1.0 Vol%.

AB - 12CaO×7Al2O3 (C12A7) single crystals have been successfully grown by the micro-pulling down method for the first time. Single and transparent C12A7 crystal was obtained with radio-frequency heating μ-PD system. Phase stability is discussed as a function of oxygen concentration in the growth atmosphere. A minimum 1.0 Vol% O2 with nitrogen atmosphere yields C12A7 phase. The distribution of Ca, Al and O elements at cross-section part was investigated by the electron probe microanalysis. The crystal composition deviation could be controlled by reducing O2 gas concentration to 1.0 Vol%.

KW - A1. Crystal morphology

KW - A2. Growth from melt

KW - B1. Oxides

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