Crystal Growth Conditions of Types i and II Na-Si Clathrates by Evaporation of Na from a Na-Si-Sn Solution

Haruhiko Morito; Masashi Shimoda; Hisanori Yamane; Kozo Fujiwara

doi:10.1021/acs.cgd.7b01342

Crystal Growth Conditions of Types i and II Na-Si Clathrates by Evaporation of Na from a Na-Si-Sn Solution

Haruhiko Morito, Masashi Shimoda, Hisanori Yamane, Kozo Fujiwara

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

Single crystals of the type I clathrate Na₈Si₄₆ were synthesized by the evaporation of Na from a Na-Si-Sn solution (Na:Si:Sn = 6:2:1 molar ratio) at 723-873 K under an Ar atmosphere of 10⁵ Pa. In the mixture of type I and type II clathrates prepared by heating at 773 K for 72 h, type I single crystals with sizes of up to 5 mm were found. A single phase of single crystals of the Na₂₄Si₁₃₆ type-II clathrate having a {111} crystal facet of about 2 mm on one side was obtained by heating at 873 K for 9 h.

Original language	English
Pages (from-to)	351-355
Number of pages	5
Journal	Crystal Growth and Design
Volume	18
Issue number	1
DOIs	https://doi.org/10.1021/acs.cgd.7b01342
Publication status	Published - 2018 Jan 3

ASJC Scopus subject areas

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

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Morito, H., Shimoda, M., Yamane, H., & Fujiwara, K. (2018). Crystal Growth Conditions of Types i and II Na-Si Clathrates by Evaporation of Na from a Na-Si-Sn Solution. Crystal Growth and Design, 18(1), 351-355. https://doi.org/10.1021/acs.cgd.7b01342

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abstract = "Single crystals of the type I clathrate Na8Si46 were synthesized by the evaporation of Na from a Na-Si-Sn solution (Na:Si:Sn = 6:2:1 molar ratio) at 723-873 K under an Ar atmosphere of 105 Pa. In the mixture of type I and type II clathrates prepared by heating at 773 K for 72 h, type I single crystals with sizes of up to 5 mm were found. A single phase of single crystals of the Na24Si136 type-II clathrate having a {111} crystal facet of about 2 mm on one side was obtained by heating at 873 K for 9 h.",

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AU - Fujiwara, Kozo

PY - 2018/1/3

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AB - Single crystals of the type I clathrate Na8Si46 were synthesized by the evaporation of Na from a Na-Si-Sn solution (Na:Si:Sn = 6:2:1 molar ratio) at 723-873 K under an Ar atmosphere of 105 Pa. In the mixture of type I and type II clathrates prepared by heating at 773 K for 72 h, type I single crystals with sizes of up to 5 mm were found. A single phase of single crystals of the Na24Si136 type-II clathrate having a {111} crystal facet of about 2 mm on one side was obtained by heating at 873 K for 9 h.

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