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Recent Studies from Martin-Luther-University Add New Data to Physics Condensed Matter (Mossbauer spectroscopy of europium-doped fluorochlorozirconate...

July 8, 2014



Recent Studies from Martin-Luther-University Add New Data to Physics Condensed Matter (Mossbauer spectroscopy of europium-doped fluorochlorozirconate glasses and glass ceramics: optimization of storage phosphors in computed radiography)

By a News Reporter-Staff News Editor at Physics Week -- Investigators publish new report on Physics Condensed Matter. According to news reporting originating in Halle Saale, Germany, by VerticalNews journalists, research stated, "Eu(2+)-doped fluorochlorozirconate (FCZ) glasses and glass ceramics, which are being developed for medical and photovoltaic applications, have been analysed by Mossbauer spectroscopy. The oxidation state and chemical environment of the europium ions, which are important for the performance of these materials, were investigated."

The news reporters obtained a quote from the research from Martin-Luther-University, "Routes for maximizing the divalent europium content were also investigated. By using EuCl2 instead of EuF2 in the starting material a fraction of about 90% of the europium was maintained in the Eu(2+) state as opposed to about 70% when using EuF2. The glass ceramics produced by subsequent thermal processing contain BaCl2 nanocrystals in which Eu(2+) is incorporated, as shown by the narrower linewidth in the Mossbauer spectrum. Debye temperatures of 147 K and 186 K for Eu(2+) and Eu(3+), respectively, were determined from temperature dependent Mossbauer measurements."

According to the news reporters, the research concluded: "The f-factors were used to obtain the Eu(2+)/Eu(3+) ratio from the area ratio of the corresponding absorption lines."

For more information on this research see: Mossbauer spectroscopy of europium-doped fluorochlorozirconate glasses and glass ceramics: optimization of storage phosphors in computed radiography. Journal of Physics Condensed Matter, 2013;25(20):205402.

Our news correspondents report that additional information may be obtained by contacting C. Pfau, Centre for Innovation Competence SiLi-nanoŽ, Martin Luther University of Halle-Wittenberg, Karl-Freiherr-von-Fritsch-Straße 3, D-06120 Halle (Saale), Germany. Additional authors for this research include C. Paßlick, S.K. Gray, J.A. Johnson, C.E. Johnson and S. Schweizer.

Keywords for this news article include: Europe, Germany, Halle Saale, Physics Condensed Matter.

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Source: Physics Week


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