IEEE Transactions on Magnetics · 1981 · 32 citations · 4 references
Natural SciencesMaterials SciencePhysicsMagnetic MaterialsMetallic MaterialsPhysical ChemistryFerromagnetic MaterialsFerromagnetismFerrous MetallurgyMagnetic AnisotropyMagnetic Properties Of SolidsMetalsAnisotropyCoercivityCoercivity MeasurementCrystallographic AnisotropyMagnetic CoercivityMagnetic Surface AnisotropyMagnetocrystalline AnisotropySurface Anisotropy
Fine iron-cobalt particles with coercivities as high as 2200 Oe have been obtained. The particles were precipitated from an aqueous solution using sodium borohydride. The coercivity was studied as a function of composition with the maximum coercivity found at 65:35 (Fe:Co ratio). The coercivity was found to arise from two effects. The first is shape anisotropy due to the chain of spheres structure of the particles. The second is a high magnetic surface anisotropy. No evidence of a contribution from magnetocrystalline anisotropy was found.
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An Approach to Elongated Fine-Particle Magnets
I. S. Jacobs, C. P. Bean · Physical Review · 1955 · 549 citations
Equilibrium relations in the solid state of the iron- cobalt system
W. C. Ellis, Edward Greiner · 1941 · 39 citations
Natural Sciences, Chemistry, Physics +16