The magnetic anisotropy constant of magnetic fluids is obtained from the angular dependence of the magnetic resonance field. The sample was frozen below room temperature under the action of a steady magnetic field of 1.45 Tesla. Magnetic anisotropy of the order of -5.4 X 10⁴ erg/cm³ at 150 K and -5.1 X 10⁴ erg/cm³ at 200 K was obtained for a water-based MnFe₂O₄ magnetic fluid sample with average particle diameter of 10.7 nm.

Date Published: 26 April 1996
PDF: 3 pages
Proc. SPIE 2779, 3rd International Conference on Intelligent Materials and 3rd European Conference on Smart Structures and Materials, (26 April 1996); doi: 10.1117/12.237135

Published in SPIE Proceedings Vol. 2779:
3rd International Conference on Intelligent Materials and 3rd European Conference on Smart Structures and Materials
Pierre Francois Gobin; Jacques Tatibouet, Editor(s)