Table of Contents
ISRN Ceramics
Volume 2011 (2011), Article ID 859385, 4 pages
http://dx.doi.org/10.5402/2011/859385
Research Article

Rapid Synthesis and Characterization of an Oxygen-Deficient Defect Perovskite L a πŸ’ B a C u πŸ“ O 𝟏 πŸ‘ + 𝜹 Phase

Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India

Received 10 June 2011; Accepted 18 July 2011

Academic Editors: O. Dymshits and A. Ravaglioli

Copyright © 2011 Chikkadasappa Shivakumara. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Oxygen-deficient defect perovskite L a 4 B a C u 5 O 1 3 + 𝛿 phase has been synthesized by the nitrate-citrate gel combustion method at 9 5 0 ∘ C for 2 h. Structural parameters were refined by the Rietveld refinement method using room-temperature powder XRD data. The L a 4 B a C u 5 O 1 3 + 𝛿 crystallizes in the tetragonal structure with space group P4/m (no. 83) and having the lattice parameters π‘Ž = 8 . 6 5 0 8 (1) Å and 𝑐 = 3 . 8 6 0 6 (2) Å, respectively. Oxygen content was determined by the iodometric titration. Low-temperature resistivity result reveals that L a 4 B a C u 5 O 1 3 + 𝛿 compound exhibit metallic behavior up to 15 K.