CRYSTALLIZATION EXPERIMENTS ON AMORPHOUS MAGNESIUM SILICATE. II. EFFECT OF STACKING FAULTS ON INFRARED SPECTRA OF ENSTATITE

Autor:	Akira Tsuchiyama, Y. Imai, Takaaki Noguchi, Chiyoe Koike, H. Chihara, T. Takakura, K. Murata
Rok vydání:	2009
Předmět:	Physics Infrared Stacking Analytical chemistry Infrared spectroscopy Astronomy and Astrophysics engineering.material Amorphous solid law.invention Space and Planetary Science law Enstatite engineering Circumstellar dust Crystallization Single crystal
Zdroj:	The Astrophysical Journal. 698:1903-1906
ISSN:	1538-4357 0004-637X
DOI:	10.1088/0004-637x/698/2/1903
Popis:	We carried out experiments of low-temperature infrared spectroscopy and transmission electron microscopy of enstatite (MgSiO3) synthesized by heating of amorphous magnesium silicate. There is a discrepancy between the infrared feature of enstatite obtained in this experiment and that of fine powdered single crystals. This reflects stacking disorder of enstatite. We show that circumstellar dust emission of enstatite is similar to the infrared feature measured in this experiment. This result strongly suggests that circumstellar enstatite has abundant stacking faults and is different from the single crystal.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::035dec4c61f9be1cf42c968803fd87a9 https://doi.org/10.1088/0004-637x/698/2/1903 Zobrazit plný text záznamu