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Title: Anisotropy properties of magnetic colloidal materials
Authors: Qi, Yabing
Zhang, Lingyun
Wen, Wei-Jia
Keywords: Magnetic anisotrophy
Colloidal materials
Particle geometry
Issue Date: 7-Jan-2003
Citation: Journal of physics. D, Applied physics, v. 36, 2003, p. L10-L14
Abstract: Magnetic anisotropy of particulate magnetic materials is investigated with respect to the particle shape and compacting geometry. Uniform sized micro-rods and microspheres, coated with nickel, were used. Our results reveal that uniformly aligned rods show the largest magnetic anisotropy, while the field-oriented suspension of coated micro-rods shows somewhat weaker magnetic anisotropy, which is in excellent quantitative agreement with the theoretical calculation. The magnetic anisotropy drops significantly when the micro-rods were replaced by microspheres, even when they were aligned in chain-like formations.
Rights: Journal of Physics D: Applied Physics © Copyright (2003) IOP Publishing Ltd. The Journal's web site is located at
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