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Laser spectroscopy of chromium(III) in magnesium aluminate spinels and transparent glass-ceramics

✍ Scribed by Mehdi Bouderbala; Georges Boulon; Anne-Marie Lejus; Anna Kisilev; Renata Reisfeld; Alla Buch; Moshe Ish-Shalom

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 412 KB
Volume: 130
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(86)80501-2

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✦ Synopsis

Laser excitation at different wavelengths was carried out on Cr'+-doped transparent glass-ceramics of composition (mole%) Ac(58.7S10Z, 16.7A120,, 17.8MgO,6.7T10~,0.03Cr~O,)andBc(49.1 SiOz, 19.7Alz0,,21.9Mg0,6.0TiO~,3.2Zr0,,0.03 Cr201), and in synthetic crystals of composition MgA120, (CT'+ ), Mg,TiO, (CrS+ ) and Mg, ?Ti,, ?Al, 604 (Cr)+ ). Analysis ofthe emission spectra, excitation spectra and decay curves at 4.4. K and room temperature reveals that Cr)+ is essentially situated on distorted single sites and in pairs exchanging Al'+ ions in the crystalline phase of glass-cerarmcs.

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