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Synthesis and optical properties of Yb0.6Y1.4O3 transparent ceramics
Luleå University of Technology.
Claude Bernard/Lyon1 University.
Claude Bernard/Lyon1 University.
Luleå University of Technology.ORCID iD: 0000-0002-2286-5588
2008 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, Vol. 464, no 1-2, 407-411 p.Article in journal (Refereed) Published
Abstract [en]

 Transparent yttrium oxide ceramics doped with 30 at.% ytterbium were successfully produced by a combination of pre-sintering and hot isostatic pressing. The influence on the final transparency of different densification states and porosity configurations obtained by varying pre-sintering conditions were investigated by optical and electron microscopy. Our results show that densification prior to the final stage of sintering is necessary to limit final porosity. Samples showing open porosity were found to lead to pore entrapment because of the diffusion of argon inside the glass capsule during hot isostatic pressing. Transmittance measurements showed that the valence charge of the ytterbium ions was 3+ at the end of the process, indicating no effect of reduction when pre-sintering in vacuum was employed. 

Place, publisher, year, edition, pages
2008. Vol. 464, no 1-2, 407-411 p.
Keyword [en]
Ceramics; Oxide materials; Sintering; Rare-earth alloys and compounds; Optical materials
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-43937DOI: 10.1016/j.jallcom.2007.10.005Local ID: 75185OAI: oai:DiVA.org:liu-43937DiVA: diva2:264798
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2013-10-02

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