Cobalt borate phosphate, Co-3[BPO7], synthesis and characterization

Yilmaz A., Bu X., Kizilyalli M., Kniep R., Stucky G.

JOURNAL OF SOLID STATE CHEMISTRY, vol.156, no.2, pp.281-285, 2001 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 156 Issue: 2
  • Publication Date: 2001
  • Doi Number: 10.1006/jssc.2000.8963
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.281-285
  • Keywords: cobalt borate-phosphate, crystal structure, magnetic properties, CRYSTAL-STRUCTURE, MAGNETIC-STRUCTURES, BOROPHOSPHATE


Single crystals of Co-3[BPO7],I were obtained by boron flux method and characterized by single-crystal diffraction data. The compound crystallizes in the monoclinic space group Cm with 9.774(2), b = 12.688(2), c = 4.9057(8) Angstrom, beta = 119.749(2)degrees; V= 528.20(15) Angstrom (3); Z = 4. The structure consists of Co in trigonal bipyramids, square pyramids, and distorted octahedra. Polyhedral Co centers, triangular B centers, and tetrahedral P centers are joined together to form a three-dimensional network. The temperature dependence of the magnetic susceptibility of the compound follows the Curie-Weiss law to 30 K. Below this temperature, the magnetic behavior displayed first antiferromagnetic ordering followed by ferrimagnetic coupling at 25 K. (C) 2001 Academic Press.