Tunable coercivity of CoFe2O4 nanoparticles via thermal annealing treatment
作者： W.S. Chiu , S. Radiman , R. Abd-Shukor , M.H. Abdullah , P.S. Khiew
DOI: 10.1016/J.JALLCOM.2007.04.215
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摘要: Abstract High coercivity magnetic nanoparticles (CoFe 2 O 4 ) have been synthesized by hydrolysis reaction in a micelle system followed proper thermal annealing treatment to induce the crystallization. The TEM observations showed that majority of particles are spherical shape, fairy monodispersed and size varied range 10.0–70.0 nm. It was found higher temperatures favored ferrite formation with larger due interdiffusion process. XRD patterns revealed all products consisted nanocrystalline phase only. properties were greatly affected average crystalline nanoparticles. By controlling treatment, ( H c saturation magnetization M s can be well tuned as function temperature. current synthetic approach offered novel development for production soft materials.
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