Czochralski growth of 12CaO·7Al2O3 crystals

Kazuhisa Kurashige; Yoshitake Toda; Satoru Matstuishi; Katsuro Hayashi; Masahiro Hirano; Hideo Hosono

doi:10.1021/cg0600290

Czochralski growth of 12CaO·7Al₂O₃ crystals

Kazuhisa Kurashige, Yoshitake Toda, Satoru Matstuishi, Katsuro Hayashi, Masahiro Hirano, Hideo Hosono

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

54 Citations (Scopus)

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
Pages (from-to)	1602-1605
Number of pages	4
Journal	Crystal Growth and Design
Volume	6
Issue number	7
DOIs	https://doi.org/10.1021/cg0600290
Publication status	Published - Jul 1 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1021/cg0600290

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title = "Czochralski growth of 12CaO·7Al2O3 crystals",

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.",

author = "Kazuhisa Kurashige and Yoshitake Toda and Satoru Matstuishi and Katsuro Hayashi and Masahiro Hirano and Hideo Hosono",

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T1 - Czochralski growth of 12CaO·7Al2O3 crystals

AU - Kurashige, Kazuhisa

AU - Toda, Yoshitake

AU - Matstuishi, Satoru

AU - Hayashi, Katsuro

AU - Hirano, Masahiro

AU - Hosono, Hideo

PY - 2006/7/1

Y1 - 2006/7/1

N2 - 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.

AB - 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.

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