The Structural, Magnetic Susceptibility, and Raman Spectroscopy Study of CuRh1−x Co x O2 (0≤x≤0.05) Delafossite Compounds

In the layered structure of delafossite-type metal oxides AMO2, the M position can be occupied by a wide spectrum of trivalent or couples of divalent/tetravalent cations. In the A position, however, only monovalent, linearly coordinated cations are accommodated. This study focuses on CuRh1?x Co x O2...

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Published inJournal of superconductivity and novel magnetism Vol. 26; no. 7; pp. 2353 - 2360
Main Authors Elkhouni, T., Amami, M., Hlil, E. K., Ben Salah, A.
Format Journal Article
LanguageEnglish
Published Springer Verlag 01.07.2013
Subjects
Cations
Condensed Matter
Couples
Magnetic permeability
Magnetic susceptibility
Magnetism
Materials Science
Metal oxides
Physics
Raman spectra
Superconductivity
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Summary:In the layered structure of delafossite-type metal oxides AMO2, the M position can be occupied by a wide spectrum of trivalent or couples of divalent/tetravalent cations. In the A position, however, only monovalent, linearly coordinated cations are accommodated. This study focuses on CuRh1?x Co x O2 (0?x?0.05) polycrystalline samples which are prepared by solid-state reaction method. Magnetic susceptibility measurements of all samples were done in a temperature range 2a250 K. The interaction of the M cations with each other through MaOaM linkages of approximately 180ADG is expected to be the dominant consideration, and this would be paramagnetic in nature. The composition-dependent Raman spectra of CuRh1?x Co x O2 displayed three intense modes (670 cm?1, 490 cm?1, and 204 cm?1) at room temperature, which matched with other delafossite structures.
Bibliography:ObjectType-Article-2
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ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-013-2182-8