Issue 12, 1998

Low temperature synthesis, structure and properties of La4BaCu5–xMxO13+δ (M=Ni, Co and Fe)

Abstract

Oxygen deficient defect perovskite oxides having the general formula La 4 BaCu 5–x M x O 13+δ (M=Ni or Co, 0≤x≥1.0, Fe, x=0.5) have been synthesized from NaOH-KOH fluxes at 450°C. Structures of these materials have been refined by the Rietveld method and confirmed by electron diffraction studies. Ni 3+ , Co 3+ and Fe 3+ ions are shown to occupy the octahedral 1(a) site in the La 4 BaCu 5 O 13+δ structure. While the Ni substituted compound is metallic, composition controlled metal to insulator (M-I) like behaviour is observed for Co and Fe substituted compounds. While temperature independent magnetic susceptibility in the case of the Ni substituted compound indicated Pauli paramagnetic behaviour, Co and Fe substituted oxides were weakly paramagnetic.

Article information

Article type
Paper

J. Mater. Chem., 1998,8, 2695-2700

Low temperature synthesis, structure and properties of La4BaCu5–xMxO13+δ (M=Ni, Co and Fe)

C. Shivakumara, M. S. Hegde, K. Sooryanarayana, T. N. Guru Row and G. N. Subbanna, J. Mater. Chem., 1998, 8, 2695 DOI: 10.1039/A804334E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements