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A Study of [Cr-O6]-based rutile analogues by means of EELS

Published online by Cambridge University Press:  01 February 2011

Angel M. Arevalo-Lopez ,
Elizabeth Castillo-Martinez  and
Miguel Ángel Alario-Franco
Angel M. Arevalo-Lopez
Affiliation:
[email protected], Universidad Complutense de Madrid, Quimica Inorganica, Madrid, Madrid, Spain
Elizabeth Castillo-Martinez
Affiliation:
[email protected], Universidad Complutense de Madrid, Quimica Inorganica, Madrid, Madrid, Spain
Miguel Ángel Alario-Franco
Affiliation:
[email protected], Universidad Complutense de Madrid, Quimica Inorganica, Madrid, Spain
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Abstract

We present in here the study by means of electron energy loss spectroscopy (EELS) of several rutile based oxides, having in common the presence of octahedrally oxygen coordinated chromium, [Cr-O6], in three different formal oxidation states: Cr4+ in CrO2, a regular rutile; Cr3+ in CrOOH, a H bonded orthorrombic distorted rutile and in CrTaO4, a metal disordered rutile and Cr2+ in CrTa2O6 an ordered trirutile structure. A linear relationship is observed between the formal oxidation state of chromium in all these rutile oxides and the separation between the Cr-L2,3 and O-K energy loss peaks.

Keywords

oxideelectron energy loss spectroscopy (EELS)Cr
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1148: Symposium PP – Solid-State Chemistry of Inorganic Materials VII , 2008 , 1148-PP03-31
Copyright
Copyright © Materials Research Society 2009

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References

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