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Crystal growth of new strontium iron rhodium oxides: Sr4Fe0.73Rh2.27O9and SrFe0.71Rh0.29O3

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Volume
377
Identifiers
DOI: 10.1016/j.jallcom.2004.01.041
Keywords
  • Oxide Single Crystal
  • Flux Growth
  • Magnetism
  • Structure
  • Cubic Perovskite
  • Hexagonal Perovskite

Abstract

Abstract Single crystals of two new strontium iron rhodates, SrFe 0.71Rh 0.29O 3 and Sr 4Fe 0.73Rh 2.27O 9, have been grown and structurally characterized. Single crystals of SrFe 0.71Rh 0.29O 3 and Sr 4Fe 0.73Rh 2.27O 9 were grown from potassium carbonate melts. SrFe 0.71Rh 0.29O 3 crystallizes in the cubic perovskite structure, space group Pm 3 ̄ m , with a=3.9027(6) Å. Sr 4Fe 0.73Rh 2.27O 9 crystallizes with trigonal symmetry in the space group P321, a=9.6091(2) Å and c=7.9448(2) Å, and is structurally related to the 2H-hexagonal perovskites. Sr 4Fe 0.73Rh 2.27O 9 contains two independent 1-D chains of face-sharing polyhedra with a sequence of two RhO 6 octahedra and one Fe/RhO 6 trigonal prism and strontium cations separating the chains. The growth conditions, structures and magnetic properties of these compounds are discussed.

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