کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1333030 979063 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chirality and ferromagnetism in NiBPO4(OH)2 containing helix edge-sharing NiO6 chains
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Chirality and ferromagnetism in NiBPO4(OH)2 containing helix edge-sharing NiO6 chains
چکیده انگلیسی

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.

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, which further share edges forming NiO6 chains around the three-fold screw-axis. Magnetic investigation of NiBPO4(OH)2 shows that it is a quasi-one-dimensional magnet, where the intra- and inter-chain interactions are proved to be both ferromagnetic, and a long-range ordering is established below 2.2 K.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 181, Issue 5, May 2008, Pages 1110–1115
نویسندگان
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