Ni (1-x) Zn (x) Fe 2 O 4 (0≤x≤1) mixed ferrite nanoparticles encapsulated with amorphous-SiO 2 were prepared by a wet chemical method. The diameters of these particles were estimated from X-ray diffraction patterns as ranging from 2 to 6 nm. Magnetization measurements were performed for each obtained sample under a ±50 kOe field. Magnetic parameters, such as saturation magnetization (M s ), permeability (µ) and coercivity (H c ), were determined from M-H curves. The relationship between saturation magnetizations M s and the Zn concentration was almost similar to that between the saturation magnetization and Ni-Zn ferrite bulk crystal, however, the absolute values of M s of the nanoparticles were about 30 % smaller than those of bulk crystal. The decrease of M s in the nanoparticle system might be attributed to the canting surface spins or ion distributions. is the abstract. You may use this Word document template to write your article.
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