Nanocrystalline Co82Ni18 Alloy: Synthesis and Magnetic Properties
Nanocrystalline Co82Ni18 alloy was synthesized by polyol reduction of cobalt-nickel hydroxide precursor. X-ray diffraction results indicated the formation of fcc phase alloy and the crystallite size was found to be about 19 nm. Scanning electron microscopy and transmission electron microscopy images showed the morphology of particles close to spheres and stoichiometry of the precursor and the alloy was obtained by the energy dispersive X-ray analysis. Selected area electron diffraction pattern indicated the polycrystalline nature of the alloy particles. The saturation magnetization of the nanocrystalline alloy was about 107 (emu/g) at room temperature and the M-H measurements at 300 K and 5 K indicated that the nanocrystalline alloy exhibits close to superparamagetic behaviour.
B.S.S. Daniel and G.P. Chaudhari
S. Panday et al., "Nanocrystalline Co82Ni18 Alloy: Synthesis and Magnetic Properties", Advanced Materials Research, Vol. 585, pp. 100-104, 2012