Color center formation in vacuum sintered Nd3xY3−3xAl5O12 transparent ceramics

Color center formation was studied in vacuum sintered Nd3xY3−3xAl5O12 transparent ceramics. The primary color centers were F- and F+-centers as evidenced by optical absorption in the 250–400 nm wavelength range and the presence of an electron spin resonance (ESR) line at g=1.9977. Annealing in air a...

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Veröffentlicht in:	Applied physics letters 2011-01, Vol.98 (5)
Hauptverfasser:	Stevenson, Adam J., Bittel, Brad C., Leh, Christopher G., Li, Xin, Dickey, Elizabeth C., Lenahan, Patrick M., Messing, Gary L.
Format:	Artikel
Sprache:	eng
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Zusammenfassung:	Color center formation was studied in vacuum sintered Nd3xY3−3xAl5O12 transparent ceramics. The primary color centers were F- and F+-centers as evidenced by optical absorption in the 250–400 nm wavelength range and the presence of an electron spin resonance (ESR) line at g=1.9977. Annealing in air at 1600 °C for 10 h reduced the number of color centers to below the detection limit of ESR. Color center formation is controlled by oxidation and reduction of Fe2+/3+ impurities.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.3549872