Hysteresis-loop overskewing in the light of a novel nucleation mode

Authors

Ralph Skomski, University of Nebraska-LincolnFollow
J. Ping Liu, University of Nebraska-LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow

Date of this Version

5-1-2000

Comments

Published by American Institute of Physics. J. Applied Physics 87, 6334 (2000). ©2000 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

It is demonstrated that the magnetostatic demagnetizing factor is not the only sample-shape dependent contribution to the hysteresis loop. There are also exchange contributions, which lead to interesting effects, particularly in nanostructures. An example is the recently discovered bulging mode in two-phase nanomagnets. The bulging mode exhibits the angular symmetry of the coherent mode, but it is incoherent due to its radial variation and gives rise to negative demagnetizing factors.