Chirality and ferromagnetism in NiBPO4(OH)2 containing helix edge-sharing NiO6 chains

Tao Yang, Jing Ju, Fuhui Liao, Juns Sasaki, Naoki Toyota, Jianhua Lin

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Two isotypic borophosphates MBPO4(OH)2 (M=Mg, Ni) have been hydrothermally synthesized and structurally characterized by powder X-ray diffraction in the space group P3121. Nickel (or magnesium) atoms are octahedrally coordinated. The octahedra share edges to form helix chains around the three-fold screw-axis. Boron and phosphorus atoms are both tetrahedrally coordinated. The BO4 and PO4 tetrahedra are alternately connected, forming vierer-single chains. These two kinds of chains are intersected in the three-dimensional framework structure. NiBPO4(OH)2 can be considered as a quasi-one-dimensional magnet because the shortest Ni2+-Ni2+ distance within the helix chain is about 3.187(1) Å, while the shortest inter-chain connection of the nickel ions is through a BO4 group (5.650(1) Å). Both dc and alternating current (ac) susceptibilities and isothermal magnetization have been measured on powder sample. The intra- and inter-chain interactions are proved to be both ferromagnetic, and a long-range ordering is established below 2.2 K in NiBPO4(OH)2.

Original languageEnglish
Pages (from-to)1110-1115
Number of pages6
JournalJournal of Solid State Chemistry
Issue number5
Publication statusPublished - 2008 May


  • Borophosphate
  • Chiral
  • Ferromagnetism
  • Magnesium
  • Nickel

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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