Title :
Evaluation of the anisotropy field for fine-particle systems from low-field thermomagnetic curves
Author :
Geshev, J. ; Martinez, Ll M. ; Muñoz, J.S. ; Schmidt, J.E. ; Mikhov, M.
Author_Institution :
Inst. de Fisica, Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil
fDate :
3/1/1999 12:00:00 AM
Abstract :
A method for evaluating the temperature-dependent magnetic anisotropy field from thermomagnetic curves for Stoner-Wohlfarth-like systems is proposed. It allows the anisotropy parameters of a sample with unknown spontaneous magnetization to be obtained by using magnetic fields considerably lower than the anisotropy field
Keywords :
magnetic anisotropy; magnetic particles; magnetocaloric effects; spontaneous magnetisation; Stoner-Wohlfarth system; fine particle; magnetic anisotropy field; spontaneous magnetization; temperature dependence; thermomagnetic curve; Anisotropic magnetoresistance; Demagnetization; Magnetic anisotropy; Magnetic field measurement; Magnetic fields; Magnetic materials; Magnetic resonance; Magnetization; Perpendicular magnetic anisotropy; Temperature dependence;
Journal_Title :
Magnetics, IEEE Transactions on
