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New oxygen-Deficient Perovskite Related Phases $[Ba_2InA1_{1-x}CU_xO_{5 - \delta}]$

Ganguli, AK and Row, Guru TN (1994) New oxygen-Deficient Perovskite Related Phases $[Ba_2InA1_{1-x}CU_xO_{5 - \delta}]$. In: Materials Research Bulletin, 29 (12). pp. 1333-1339.

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Solid solutions of the type $Ba_21nAl_{1-x}Cu_x0_{5-\delta}$ $(0.25 \leq x \leq 1)$ have been synthesized by high temperature solid state reactions of the constituent oxides. They crystallize in a tetragonal cell with space group P4/mmm, Z = 1. $(\b{a} = 4,2197(7), \b{c} = 7.9254(18)A$ for the x = 0.5 composition). Powder x - ray Rietveld analysis using a double perovskite related structure e l led to satisfactory refinement o f the model for the x = 0.5 sample, $Ba_2InAl_{0.5}Cu_{0.5}O_{4.76}.$ The structure consists of alternate slabs of $BaInO_3$ and $Ba(Cu/A1)0_{1.75}$ along the c-axis. Magnetic susceptibility measurements give an effective moment of ~ 0.5 BM from the Curie-weiss region.

Item Type: Journal Article
Publication: Materials Research Bulletin
Publisher: Elsevier
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Barium;indium;copper;oxides
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 23 Jun 2006
Last Modified: 19 Sep 2010 04:29
URI: http://eprints.iisc.ac.in/id/eprint/7697

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