| Effect of Microstructure on the Radioluminescence and Transparency of Ce-Doped Strontium Hafnate Ceramics. | |
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MedLine Citation:
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PMID: 21339835 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this paper we report on the fabrication and characterization of SrHfO(3):Ce ceramics. Powders were prepared by solid-state synthesis using metal oxides and carbonates. X-ray diffraction measurements showed that phase-pure SrHfO(3) is formed at 1200°C. Inductively coupled plasma spectroscopy confirmed the purity and composition of each batch. SrHfO(3) exhibits several phase changes in the solid, but this does not appear to be detrimental to the ceramics. Microprobe experiments showed uniform elemental grain composition, whereas aluminum added as charge compensation for trivalent cerium congregated at grain boundaries and triple points. Radioluminescence spectra revealed that the light yield decreases when the concentration of excess Sr increases. The decrease in the light yield may be related to the change of Ce(3+) into Ce(4+) ions. For stoichiometric SrHfO(3):Ce, the light yield is about four times that of bismuth germanate (BGO), the conventional benchmark, indicating great potential for many scintillator applications. |
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Authors:
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Edgar V van Loef; Yimin Wang; Stuart R Miller; Charles Brecher; William H Rhodes; Gary Baldoni; Stephen Topping; Helmut Lingertat; Vinod K Sarin; Kanai S Shah |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: Optical Materials Volume: 33 ISSN: 1873-1252 ISO Abbreviation: - Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2011-2-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9885806 Medline TA: Opt Mater (Amst) Country: - |
Other Details:
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Languages: ENG Pagination: 84-90 Citation Subset: - |
Affiliation:
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Radiation Monitoring Devices, Watertown, MA 02472, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
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Descriptor/Qualifier:
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| Grant Support | |
ID/Acronym/Agency:
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R44 EB001009-03//NIBIB NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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