Origins of colour in Yb-Si-Al-O-N glasses

Wynette Redington; Abdessamad Kidari; Murt Redington; Fathima Laffir; Michael J. Pomeroy; Stuart Hampshire

doi:10.1016/j.jeurceramsoc.2011.04.027

Origins of colour in Yb-Si-Al-O-N glasses

Wynette Redington, Abdessamad Kidari, Murt Redington, Fathima Laffir, Michael J. Pomeroy, Stuart Hampshire

Retired Staff

University of Limerick

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

Abstract

Previous work has shown that some RE-Si-Al-O-N glasses are coloured. In particular, oxynitride glasses containing Ytterbium were observed to display a wide range of colours depending on their composition. The reasons for this were not immediately evident. As Ytterbium and Europium have been reported to display valency variations in silicate glasses and α-sialons, the current study prepared a range of Yb-Si-Al-O-N glasses, characterised them by means of X-ray photoelectron, Raman, FTIR and UV-vis spectroscopy as well as thermal analysis and X-ray diffraction. The correlation between the structural features of the glasses with the changes in colour occurring when varying the Yb:Al ratio were investigated. Ytterbium garnet was found to be the source of colour change in the Yb-Si-Al-O-N in the compositions studied.

Original language	English
Pages (from-to)	1359-1364
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	32
Issue number	7
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2011.04.027
Publication status	Published - Jun 2012

Keywords

Colour
Glass
Sialon
Spectroscopy
X-ray methods

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10.1016/j.jeurceramsoc.2011.04.027

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title = "Origins of colour in Yb-Si-Al-O-N glasses",

abstract = "Previous work has shown that some RE-Si-Al-O-N glasses are coloured. In particular, oxynitride glasses containing Ytterbium were observed to display a wide range of colours depending on their composition. The reasons for this were not immediately evident. As Ytterbium and Europium have been reported to display valency variations in silicate glasses and α-sialons, the current study prepared a range of Yb-Si-Al-O-N glasses, characterised them by means of X-ray photoelectron, Raman, FTIR and UV-vis spectroscopy as well as thermal analysis and X-ray diffraction. The correlation between the structural features of the glasses with the changes in colour occurring when varying the Yb:Al ratio were investigated. Ytterbium garnet was found to be the source of colour change in the Yb-Si-Al-O-N in the compositions studied.",

keywords = "Colour, Glass, Sialon, Spectroscopy, X-ray methods",

author = "Wynette Redington and Abdessamad Kidari and Murt Redington and Fathima Laffir and Pomeroy, {Michael J.} and Stuart Hampshire",

year = "2012",

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doi = "10.1016/j.jeurceramsoc.2011.04.027",

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AU - Redington, Wynette

AU - Kidari, Abdessamad

AU - Redington, Murt

AU - Laffir, Fathima

AU - Pomeroy, Michael J.

AU - Hampshire, Stuart

PY - 2012/6

Y1 - 2012/6

N2 - Previous work has shown that some RE-Si-Al-O-N glasses are coloured. In particular, oxynitride glasses containing Ytterbium were observed to display a wide range of colours depending on their composition. The reasons for this were not immediately evident. As Ytterbium and Europium have been reported to display valency variations in silicate glasses and α-sialons, the current study prepared a range of Yb-Si-Al-O-N glasses, characterised them by means of X-ray photoelectron, Raman, FTIR and UV-vis spectroscopy as well as thermal analysis and X-ray diffraction. The correlation between the structural features of the glasses with the changes in colour occurring when varying the Yb:Al ratio were investigated. Ytterbium garnet was found to be the source of colour change in the Yb-Si-Al-O-N in the compositions studied.

AB - Previous work has shown that some RE-Si-Al-O-N glasses are coloured. In particular, oxynitride glasses containing Ytterbium were observed to display a wide range of colours depending on their composition. The reasons for this were not immediately evident. As Ytterbium and Europium have been reported to display valency variations in silicate glasses and α-sialons, the current study prepared a range of Yb-Si-Al-O-N glasses, characterised them by means of X-ray photoelectron, Raman, FTIR and UV-vis spectroscopy as well as thermal analysis and X-ray diffraction. The correlation between the structural features of the glasses with the changes in colour occurring when varying the Yb:Al ratio were investigated. Ytterbium garnet was found to be the source of colour change in the Yb-Si-Al-O-N in the compositions studied.

KW - Colour

KW - Glass

KW - Sialon

KW - Spectroscopy

KW - X-ray methods

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IS - 7

ER -

Origins of colour in Yb-Si-Al-O-N glasses

Abstract

Keywords

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