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Low temperature synthesis of barium oxynitridosilicates using BaCN2 and SiO2

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Title: Low temperature synthesis of barium oxynitridosilicates using BaCN2 and SiO2
Authors: Masubuchi, Yuji Browse this author →KAKEN DB
Sada, Naoki Browse this author
Kawahara, Yoshiteru Browse this author
Arai, Kenji Browse this author
Motohashi, Teruki Browse this author
Higuchi, Mikio Browse this author →KAKEN DB
Issue Date: 7-May-2021
Publisher: Royal Society of Chemistry
Journal Title: Dalton transactions
Volume: 50
Issue: 17
Start Page: 5883
End Page: 5889
Publisher DOI: 10.1039/d1dt00824b
Abstract: Barium oxynitridosilicates, Ba3Si6O12N2 and Ba3Si6O9N4, were obtained from a mixture of BaCN2 and SiO2 at 800 degrees C, which is several hundred degrees lower than the temperature required in solid state reactions using BaCO3, SiO2 and Si3N4. The low-temperature formation mechanism was investigated by thermogravimetry analysis in conjunction with gas chromatography and mass spectroscopy. The phase ratio between the oxynitridosilicates was controlled by tuning the reaction temperature, duration, and atmosphere. Almost single-phase Ba3Si6O12N2 was obtained by reaction at 800 degrees C for 15 h under a N-2 atmosphere, but the product changed to Ba3Si6O9N4 after 50 h at 800 degrees C or by heating at 950 degrees C for 15 h. The photoluminescence properties of Eu-doped products obtained at 800 degrees C using a mixture of BaCN2 : Eu and SiO2 were investigated.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鱒渕 友治

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