Synthesis and characterization of the new Ln2FeMoO7 (Ln = Y, Dy, Ho) compounds

Gabriel M. Veith, Maxim V. Lobanov, Thomas J. Emge, Martha Greenblatt, Mark Croft, Frank Stowasser, Joke Hadermann, Gustaaf Van Tendeloo

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

The new compounds Ln2FeMoO7 (Ln = Y, Dy, Ho) have been synthesized by solid-state reaction in evacuated silica tubes. The crystal structure of Dy2FeMoO7 and Ho2FeMoO7 was determined ab initio by simulated annealing in the R3̄ space group. Transmission electron microscopy study of Y2FeMoO7 revealed an unusual lamellar microstructure, composed of blocks with the structure of different zirconolite polymorphs. The dominant form corresponds to the zirconolite-2M type structure (space group C2/c) with a partially ordered array of Fe and Mo ions. X-Ray near edge spectroscopy data are consistent with formally Fe3+ and Mo5+ oxidation states for all compounds. Magnetic and transport measurements are reported.

Original languageEnglish
Pages (from-to)1623-1630
Number of pages8
JournalJournal of Materials Chemistry
Volume14
Issue number10
DOIs
StatePublished - May 21 2004
Externally publishedYes

Fingerprint

Dive into the research topics of 'Synthesis and characterization of the new Ln2FeMoO7 (Ln = Y, Dy, Ho) compounds'. Together they form a unique fingerprint.

Cite this