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 |
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Pages (from-to) | 518-521 |
Number of pages | 4 |
Journal | Journal of Crystal Growth |
Volume | 311 |
Issue number | 3 |
DOIs | |
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