Yttrium Aluminum Garnet as a Scavenger for Ca and Si

Yttrium Aluminum Garnet as a Scavenger for Ca and Si

Doped yttrium aluminum garnet, Y3Al5O12 (YAG), has drawn considerable attention for solid‐state industrial, medical, and scientific laser applications. The crystal optical activity is closely related to the type and amount of doping element. Studies on highly yttrium‐doped, creep‐resistant alumina c...

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Bibliographic Details
Published in:Journal of the American Ceramic Society Vol. 91; no. 11; pp. 3663 - 3667
Main Authors: Kuru, Yener, Savasir, Onur, Nergiz, Saide Z., Oncel, Cinar, Gulgun, Mehmet A., Haug, Siglinde, Van Aken, Peter A.
Format: Journal Article
Language:English
Published: Malden, USA Blackwell Publishing Inc 01-11-2008
Wiley
Wiley Subscription Services, Inc
Subjects:
Aluminum
Applied sciences
Building materials. Ceramics. Glasses
Calcium
Cations
Ceramic industries
Ceramics
Chemical compounds
Chemical industry and chemicals
Crystals
Doping
Exact sciences and technology
Garnets
Ions
Miscellaneous
Silicon
Technical ceramics
YAG
Yttrium
Electron microprobe
Impurity density
Aluminium Yttrium Oxides Mixed
Experimental study
X ray diffraction
Oxide ceramics
Aluminium Oxides
Pollution
Yttrium Oxides
Calcium addition
Impurity solubility
Silicon addition
Technical ceramics
Garnet type compound
Codoping
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Summary:Doped yttrium aluminum garnet, Y3Al5O12 (YAG), has drawn considerable attention for solid‐state industrial, medical, and scientific laser applications. The crystal optical activity is closely related to the type and amount of doping element. Studies on highly yttrium‐doped, creep‐resistant alumina ceramics with Ca and Si contamination have indicated that YAG precipitates in the ceramic had a propensity to allow the simultaneous incorporation of Ca and Si impurities on the order of 1% into their structure. The cosolubility potential for Ca and Si in YAG crystals was investigated through systematic doping and codoping of YAG polycrystals with Ca2+ and/or Si4+. It was shown via X‐ray diffraction and electron probe microanalysis techniques that the ceramic can accommodate more than an order of magnitude amounts of Ca2+ and Si4+ when they are incorporated in equal amounts simultaneously than when they are introduced alone. The cosolubility limit for Ca and Si was determined to be between 3% and 4% of the cation amount in pure YAG. Enhanced co‐solubility was discussed in terms of size and charge compensations in the lattice. Codoping with a suitable element is introduced as a possible way to increase the solubility of useful cations in this ceramic, which is the host material for lasers.
Bibliography:ArticleID:JACE02659
ark:/67375/WNG-VZ7J8488-K
istex:410D4E606D9DE200A4B0EA2E4AEDFD09E63A66B2
This work was supported from the European Union under the Framework 6 program under a contract for an Integrated Infrastructure Initiative. Reference 026019 ESTEEM, Transnational Activities (TA7) to MPI. The authors also acknowledge support of the National Center for Electron Microscopy, Lawrence Berkeley Lab, which is supported by the U.S. Department of Energy under Contract # DE‐AC02‐05CH11231.
S. Wiederhorn—contributing editor
*
Member, The American Ceramic Society.
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SourceType-Scholarly Journals-1
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ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2008.02659.x