Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1674586 | Thin Solid Films | 2008 | 5 Pages |
Abstract
Single crystals of 12CaO·7Al2O3 (C12A7) have been grown by the Czochralski method with three different growth directions of <100>, <110>, and <111>. Employment of a 2.0% oxygen-containing nitrogen atmosphere and use of an iridium crucible were the critical factors for obtaining the single crystal. The crystal exhibited orange color resulting from the incorporation of Ir4+ ions of ∼ 5 × 1017 cm− 3, presumably occupying at Ca2+ sites. High resolution X-ray diffraction analyses indicated that the C12A7 single crystal shows the tetragonal symmetry belonging to the space group I4―2m.
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Authors
Kazuhisa Kurashige, Shunsuke Ueda, Masashi Miyakawa, Yoshitake Toda, Satoru Matsuishi, Sungwng Kim, Masahiro Hirano, Hideo Hosono,