News Column

Investigators at University of Montpellier Report Findings in Chalcogens

January 31, 2014



By a News Reporter-Staff News Editor at Science Letter -- Fresh data on Chalcogens are presented in a new report. According to news reporting originating from Montpellier, France, by NewsRx correspondents, research stated, "Combining functionalities in devices with high performances is a great challenge that rests on the discovery and optimization of materials. In this framework, layered oxides are attractive for numerous purposes, from energy conversion and storage to magnetic and electric properties."

Our news editors obtained a quote from the research from the University of Montpellier, "We demonstrate here the oxygen storage ability of ferroelectric LuFe2O4+x within a large x range (from 0 to 0.5) and its cycling possibility. The combination of thermogravimetric analyses, X- ray diffraction and transmission electron microscopy evidences a complex oxygen intercalation/ de- intercalation process with several intermediate metastable states. This topotactic mechanism is mainly governed by nanoscale structures involving a shift of the cationic layers. The ferrite is highly promising because absorption begins at a low temperature (similar or equal to 200 degrees C), occurs in a low oxygen pressure and the uptake of oxygen is reversible without altering the quality of the crystals."

According to the news editors, the research concluded: "The storage/ release of oxygen coupled to the transport and magnetic properties of LnFe(2)O(4) opens the door to new tunable multifunctional applications."

For more information on this research see: Oxygen storage capacity and structural flexibility of LuFe2O4+x C x ( 0 Nature Materials, 2014;13(1):74-80. Nature Materials can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group - www.nature.com/; Nature Materials - www.nature.com/nmat/)

The news editors report that additional information may be obtained by contacting M. Hervieu, University of Montpellier, Inst Charles Gerhardt UMR CNRS 5253, F-34095 Montpellier, France. Additional authors for this research include A. Guesdon, J. Bourgeois, E. Elkaim, M. Poienar, F. Damay, J. Rouquette, A. Maignan and C. Martin (see also Chalcogens).

Keywords for this news article include: France, Europe, Chalcogens, Montpellier

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Source: Science Letter


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