Synthesis, structure and IR absorption studies of LnBaCuCoO(5) (Ln equal earth) oxides

Shivakumara, C and Hegde, MS and Subbanna, GN (1996) Synthesis, structure and IR absorption studies of LnBaCuCoO(5) (Ln equal earth) oxides. In: Bulletin of Materials Science, 19 (4). 607-613 .

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Abstract

A series of oxides LnBaCuCoO(5) (Ln = Pr, Nd, Sm, Dy, Gd, Ho and Er) have been synthesized by ceramic method. The oxides crystallize in a tetragonal structure, isostructural to YBaCuCoO5. All the oxides in the series are semiconducting. IR spectra of these oxides show distinct absorption bands at 630 cm(-1), 550 cm(-1) and 330 cm(-1) which are assigned to E, A(2) and A(1) modes respectively. Doping of holes in these oxides, by calcium substitution in Er1-xCaxBaCuCoO5-x (up to x similar or equal to 0.3) was done but, these oxides did not show metallic behaviour.

Item Type:	Journal Article
Publication:	Bulletin of Materials Science
Publisher:	Indian Academy of Sciences
Additional Information:	Copyright of this article belongs to Indian Academy of Sciences.
Keywords:	Ceramic method;rare earth oxides;IR spectra.
Department/Centre:	Division of Chemical Sciences > Materials Research Centre Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	13 May 2011 05:16
Last Modified:	13 May 2011 05:16
URI:	http://eprints.iisc.ac.in/id/eprint/37620

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