Abstract
Single crystals of nanoporous 12CaO·7Al2O3 (C12A7) as large as 27 mm in diameter, 120 mm in length, and 207 g in weight have been successfully grown by the Czochralski method. We found that a 2.0% oxygen-containing nitrogen atmosphere and an iridium crucible are the critical factors for success. The crystal ingot exhibited an orange color resulting from the incorporation of Ir4+ ions of ca. 5 × 1017 cm-3, which presumably occupy Ca2+ sites. X-ray diffraction analysis indicated that the ingot obtatined was a single crystal with few domains.
Original language | English |
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Pages (from-to) | 1602-1605 |
Number of pages | 4 |
Journal | Crystal Growth and Design |
Volume | 6 |
Issue number | 7 |
DOIs | |
Publication status | Published - Jul 1 2006 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics