Kigook Song, Robert D. Miller, et al.
Macromolecules
We have studied the effect of magnetic disorder on the magnetization reversal process in thin Co/CoO-films. The antiferromagnetic CoO layer allows a reversible tuning of the magnetic disorder by simple temperature variation, which was experimentally verified by measuring the ferromagnetic resonance linewidth as a function of temperature. The Co/CoO-films exhibit a discontinuous magnetization reversal process for temperatures above a critical temperature Tc, whereas smooth magnetization loops occur for T < Tc. Our measurements establish the existence of a disorder-driven critical point in the non-equilibrium phase diagram. In addition, we find that the magnetization reversal curve exhibits an asymmetry, which switches at the critical point from a precursor mechanism for T < Tc to a post-reversal annealing behavior for T > Tc. © 2001 Published by Elsevier Science B.V.
Kigook Song, Robert D. Miller, et al.
Macromolecules
H.D. Dulman, R.H. Pantell, et al.
Physical Review B
Kafai Lai, Alan E. Rosenbluth, et al.
SPIE Advanced Lithography 2007
L.K. Wang, A. Acovic, et al.
MRS Spring Meeting 1993