Coupled anion and cation ordering in Sr3RFe4O 10.5 (R=Y, Ho, Dy) anion-deficientperovskites

Artem M. Abakumov, Hans D'Hondt, Marta D. Rossell, Alexander A. Tsirlin, Olga Gutnikova, Dmitry S. Filimonov, Walter Schnelle, Helge Rosner, Joke Hadermann, Gustaaf Van Tendeloo, Evgeny V. Antipov

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The Sr3RFe4O10.5 (R=Y, Ho, Dy) anion-deficient perovskites were prepared using a solid-state reaction in evacuated sealed silica tubes. Transmission electron microscopy and 57Fe Mssbauer spectroscopy evidenced a complete A-cations and oxygen vacancies ordering. The structure model was further refined by ab initio structure relaxation, based on density functional theory calculations. The compounds crystallize in a tetragonal a≈2√2ap≈11.3 Å, ≈4p≈16Å unit cell (ap: parameter of the perovskite subcell) with the P42/mnm space group. Oxygen vacancies reside in the (FeO5/43/4) layers, comprising corner-sharing FeO4 tetrahedra and FeO5 tetragonal pyramids, which are sandwiched between the layers of the FeO 6 octahedra. Smaller R atoms occupy the 9-fold coordinated position, whereas the 10-fold coordinated positions are occupied by larger Sr atoms. The Fe sublattice is ordered aniferromagnetically up to at least 500 K, while the rare-earth sublattice remains disordered down to 2 K.

Original languageEnglish
Pages (from-to)2845-2854
Number of pages10
JournalJournal of Solid State Chemistry
Issue number12
Publication statusPublished - Dec 2010
Externally publishedYes


  • Anion ordering
  • Anion-deficient perovskite
  • Cation ordering
  • Crystal structure
  • Ferrite
  • Magnetic properties
  • Transmission electron microscopy


Dive into the research topics of 'Coupled anion and cation ordering in Sr3RFe4O 10.5 (R=Y, Ho, Dy) anion-deficientperovskites'. Together they form a unique fingerprint.

Cite this