Synthesis, crystal structure determination, thermal and magnetic properties of the new Cu0.73Ni0.27(HSeO3)2 compound
- Resource Type
- Authors
- M. Loukil; Ahlem Kabadou; Lotfi Bessais; K. Zehani; A. Ben Salah; I. Hentech
- Source
- Journal of Magnetism and Magnetic Materials. 422:315-321
- Subject
- Phase transition
Materials science
02 engineering and technology
Crystal structure
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
0104 chemical sciences
Electronic, Optical and Magnetic Materials
Crystallography
Magnetization
Differential scanning calorimetry
Nuclear magnetic resonance
Ferromagnetism
0210 nano-technology
Thermal analysis
Powder diffraction
Monoclinic crystal system
- Language
- ISSN
- 0304-8853
A novel three-dimensional Cu 0.73 Ni 0.27 (HSeO 3 ) 2 compound was prepared from an aqueous solution. This compound crystallizes in the monoclinic system with P 2 1 /n space group and with the following cell parameters: a =6.4379(3) A; b =7.3555(3) A; c =5.7522(3) A; β =93.4341(1)°; V =271.90(2) A 3 and Z =2. The reported material has been structurally characterized by X-ray powder diffraction and confirmed by scanning electron microscope and energy dispersive spectroscopy (MEB/EDS) analysis. The copper/nickel atom is surrounded by an octahedron coordination of oxygen atoms from sex hydrogenoselenites anions. The presence of (HSeO 3 ) − has been further confirmed by IR spectroscopy and this compound exhibits a phase transition at 356 K, this transition has been detected by differential scanning calorimetry and TG-DTA measurement. The magnetic property of this material was determined. The ferromagnetic ordering is further confirmed by the magnetic field dependence of the magnetization (Hysteresis loop) at 10 K. The substitution of Cu by Ni induces a ferro-paramagnetic transition at T=31 K. Field cooled (FC) and Zero field cooled (ZFC) magnetization measurements under an applied field of 100 Oe in the temperature range of 10–300 K were performed. These measurements have been resulted the blocking temperature (T B ) at around 25 K.