Crystal structure and magnetic properties of CuSb2O4

M. T. Atanasova, A. M. Strydom, C. J.H. Schutte, L. C. Prinsloo, W. W. Focke

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The crystal structure of a copper antimonite (CuSb2O 4) was determined from X-ray powder diffraction data. The structure was solved by simulated annealing in direct space using the Rietveld method. The compound crystallizes in tetragonal symmetry and space group P4 2 bc (106); unit cell parameters a = b = 8.76033(5) Å, c = 5.79786(4) Å, Z = 4, V = 444.947(5) Å3 and density (calc.) = 5.539 g cm -3. The CuO6 polyhedra are strongly elongated due to Jahn-Teller distortion in a [2+2+2] coordination arrangement, i.e. there are two long axial Cu-O1 bonds of 2.447(13) Å and in the equatorial plane there are two intermediate Cu-O2 bonds of 2.07(3) Å and two short Cu-O2 bonds of 1.88(2) Å. The SbO3 pyramidal arrangement is almost regular with Sb-O1 bonds of 1.97(2) Å (2×) and Sb-O2 of 1.959(5) Å. The experimentally obtained Raman spectrum is consistent with values obtained from theoretical modelling studies. The magnetic behaviour of this new compound suggests that it belongs to the class of S = 1/2 Heisenberg chain systems.

Original languageEnglish
Pages (from-to)3497-3510
Number of pages14
JournalJournal of Materials Science
Issue number9
Publication statusPublished - May 2014

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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