Enhanced Magnetorheological Performance of Carbonyl Iron Suspension Added With Barium Ferrite Nanoparticle

Static and dynamic magnetic properties of Co2Z barium ferrite nanoparticle composites

The static, dynamic and attenuation properties of Co2Z barium ferrites and Co2Z composites have been studied. The results showed that both static and dynamic magnetic properties are significantly different for large particles and nanoparticles. As compared to large particles, Co2Z nanoparticles have a small saturation magnetization Ms , large coercivity Hc , small permeability μ0 and μ ′′ max, ...

Zirconia-coated carbonyl-iron-particle-based magnetorheological fluid for polishing optical glasses and ceramics.

We report on magnetorheological finishing (MRF) spotting experiments performed on glasses and ceramics using a zirconia-coated carbonyl-iron (CI)-particle-based magnetorheological (MR) fluid. The zirconia-coated magnetic CI particles were prepared via sol-gel synthesis in kilogram quantities. The coating layer was approximately 50-100 nm thick, faceted in surface structure, and well adhered. Co...

Spin Reorientation in Substituted Barium Ferrite

The structural transformation of substituted hexagonal ferrite powders BaFetoCoTiO~s prepared by mechanical milling, was investigated as a fimction of grinding time by means of MOssbauer spectrometry and static magnetic measurements. A spin reorientation is clearly evidenced from the temperature dependence of the hyperfine parameters and of the initial magnetic permeability on the powder mechan...

M-Type Barium Hexagonal Ferrite Films

Electrokinetic and viscoelastic properties of magnetorheological suspensions of cobalt ferrite

Magnetorheological suspensions are among the most promising colloidal systems from the point of view of their many potential technological applications. Most studies on these systems have, however, been performed using a non-polar liquid as dispersion medium. In this work we consider aqueous suspensions of synthetic, spherical cobalt ferrite particles. From electrophoretic mobility determinatio...