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Structural, magnetic, and optical properties of A3V4(PO4)6 (A = Mg, Mn, Fe, Co, Ni)

Journal Article


Abstract


  • Combined synchrotron and neutron powder diffraction indicates that A3V4(PO4)6 (A = Mg, Mn, Fe, Co, Ni) compounds crystallize with triclinic P1 symmetry. Lattice parameters expand as expected with successive increases in the ionic radius of the A2+ ion. Cation disorder on the octahedral sites increases as the ionic radii of A2+ ion decreases. Direct-current magnetic susceptibility measurements indicate that all compounds with magnetic A2+ ions order anti-ferromagnetically with transition temperatures ranging from 12 to 15 K. Effective magnetic moments for A3V4(PO4)6 (A = Mg, Mn, Fe, Co, Ni) are 5.16, 11.04, 10.08, 9.76, and 7.96 μB per formula unit, respectively, in line with calculated values for high-spin transition metal ions. With the exception of Co3V4(PO4)6 the ultraviolet-visible spectra are dominated by d-d transitions of the V3+ ions. The striking emerald green color of Co3V4(PO4)6 arises from the combined effects of d-d transitions involving both V3+ and Co2+.

UOW Authors


  •   Porter, Spencer H. (external author)
  •   Xiong, Jie (external author)
  •   Avdeev, Maxim (external author)
  •   Merz, David (external author)
  •   Woodward, Patrick M. (external author)
  •   Huang, Zhenguo (external author)

Publication Date


  • 2016

Citation


  • Porter, S. H., Xiong, J., Avdeev, M., Merz, D., Woodward, P. M. & Huang, Z. (2016). Structural, magnetic, and optical properties of A3V4(PO4)6 (A = Mg, Mn, Fe, Co, Ni). Inorganic Chemistry, 55 (12), 5772-5779.

Scopus Eid


  • 2-s2.0-84975517431

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2155

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 5772

End Page


  • 5779

Volume


  • 55

Issue


  • 12

Place Of Publication


  • United States

Abstract


  • Combined synchrotron and neutron powder diffraction indicates that A3V4(PO4)6 (A = Mg, Mn, Fe, Co, Ni) compounds crystallize with triclinic P1 symmetry. Lattice parameters expand as expected with successive increases in the ionic radius of the A2+ ion. Cation disorder on the octahedral sites increases as the ionic radii of A2+ ion decreases. Direct-current magnetic susceptibility measurements indicate that all compounds with magnetic A2+ ions order anti-ferromagnetically with transition temperatures ranging from 12 to 15 K. Effective magnetic moments for A3V4(PO4)6 (A = Mg, Mn, Fe, Co, Ni) are 5.16, 11.04, 10.08, 9.76, and 7.96 μB per formula unit, respectively, in line with calculated values for high-spin transition metal ions. With the exception of Co3V4(PO4)6 the ultraviolet-visible spectra are dominated by d-d transitions of the V3+ ions. The striking emerald green color of Co3V4(PO4)6 arises from the combined effects of d-d transitions involving both V3+ and Co2+.

UOW Authors


  •   Porter, Spencer H. (external author)
  •   Xiong, Jie (external author)
  •   Avdeev, Maxim (external author)
  •   Merz, David (external author)
  •   Woodward, Patrick M. (external author)
  •   Huang, Zhenguo (external author)

Publication Date


  • 2016

Citation


  • Porter, S. H., Xiong, J., Avdeev, M., Merz, D., Woodward, P. M. & Huang, Z. (2016). Structural, magnetic, and optical properties of A3V4(PO4)6 (A = Mg, Mn, Fe, Co, Ni). Inorganic Chemistry, 55 (12), 5772-5779.

Scopus Eid


  • 2-s2.0-84975517431

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2155

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 5772

End Page


  • 5779

Volume


  • 55

Issue


  • 12

Place Of Publication


  • United States