Issue 8, 2003

Pb2FeReO6: new defect pyrochlore oxide with a geometrically frustrated Fe/Re sublattice

Abstract

Nominal Pb2FeReO6 adopts a defect pyrochlore structure at ambient pressure unlike the other A2FeReO6 (A = Ca, Sr, Ba). Rietveld refinement of the crystal structure of one of the compositions Pb2FeReO6.1 from powder XRD data shows that the structure is cubic pyrochlore (a = 10.382 Å; space group: Fd3m) where oxygen vacancies occur at O2 (8b) sites. The divergence between the ZFC and FC magnetic susceptibility data and the non-Arrhenius resistivity behaviour of Pb2FeReO6 compositions are characteristic of the underlying geometrically frustrated Fe/Re cation sublattice in the pyrochlore structure.

Graphical abstract: Pb2FeReO6: new defect pyrochlore oxide with a geometrically frustrated Fe/Re sublattice

Supplementary files

Article information

Article type
Paper
Submitted
11 Apr 2003
Accepted
27 May 2003
First published
12 Jun 2003

J. Mater. Chem., 2003,13, 2011-2014

Pb2FeReO6: new defect pyrochlore oxide with a geometrically frustrated Fe/Re sublattice

K. Ramesha, L. Sebastian, B. Eichhorn and J. Gopalakrishnan, J. Mater. Chem., 2003, 13, 2011 DOI: 10.1039/B304118M

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