ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Neutron diffraction studies of $La_4BaCu_4MO_{13+\delta}$ (M = Ni and Co) oxides

Shivakumara, C and Hegde, MS and Rajagopal, H and Sequiera, A (2000) Neutron diffraction studies of $La_4BaCu_4MO_{13+\delta}$ (M = Ni and Co) oxides. In: Materials Research Bulletin, 35 (12). pp. 2063-2068.

[img] PDF
Restricted to Registered users only

Download (533kB) | Request a copy


The structures of $La_4BaCu_4NiO_{13.20}$ and $La_4BaCu_4CoO_{13.35}$ oxides synthesized in NaOH-KOH flux at 450°C were studied using powder neutron diffraction Rietveld analysis. These oxides crystallize in a tetragonal structure in the P4/m space group with $Ni^{3+}$ or $Co^{3+}$ partially occupying 6-coordinated (1a) and 5-coordinated (4j) sites of the $La_4BaCu_5O_{13+\delta}$ system. Increase in oxygen content with Ni and Co substitution is reflected in the increase in unit-cell volume, compared with that of the parent $La_4BaCu_5O_{13+\delta}$ reserved.

Item Type: Journal Article
Publication: Materials Research Bulletin
Publisher: Elsevier
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Oxides;Chemical synthesis;Neutron scattering;Crystal structure
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 16 Aug 2006
Last Modified: 19 Sep 2010 04:29
URI: http://eprints.iisc.ac.in/id/eprint/7867

Actions (login required)

View Item View Item