Structural Chemistry and Electronic Properties of Sr2FeIrO6

P.D. Battle, G.R. Blake, T.C. Gibb, J.F. Vente

Research output: Contribution to journalArticleAcademic

40 Citations (Scopus)
324 Downloads (Pure)

Abstract

A polycrystalline sample of Sr2FeIrO6 has been synthesized and shown by a combination of X-ray diffraction, neutron diffraction, magnetometry, and Mössbauer spectroscopy to be a triclinic (space group I¯1; a = 5.54996(3) Å, b = 5.57847(3) Å, c = 7.84165(3) Å, α = 89.990(1)°, β = 90.059(1)°, γ = 90.079(1)°) perovskite, with a partially ordered (0.928 : 0.072(4)) distribution of transition metal cations over the six-coordinate sites. The predominant oxidation states are Fe3+ and Ir5+, although the Mössbauer data suggest that ~4% Fe4+ is present. The compound is a Type II antiferromagnet below 120 K, with an ordered magnetic moment on the Fe-dominated sites of 3.67(3) µB per Fe3+ cation. The spins associated with the antisite defects are frustrated and do not take part in the long-range magnetic ordering, consequently giving rise to hysteresis in the magnetic susceptibility below 40 K. The possible location of the Fe4+ cations is discussed briefly.
Original languageEnglish
Pages (from-to)541-548
Number of pages8
JournalJournal of Solid State Chemistry
Volume145
Issue number2
DOIs
Publication statusPublished - 1999

Cite this