title: Experimental phase diagram of perpendicularly magnetized ultrathin ferromagnetic films.
abstract: We image the domain patterns in perpendicularly magnetized ultrathin Fe films on Cu(100) as a function of the temperature T and the applied magnetic field H. Between the low-field stripe phase and the high-field uniform phase we find a bubble phase, consisting of reversed circular domains in a homogeneous background. The curvature of the transition lines in the H-T parameter space is in contrast to the general expectations. The pattern transformations show yet undetected scaling properties.
authors.affiliation: Laboratory for Solid State Physics, ETH Zurich, 8093 Zurich, Switzerland.
authors.forename: N
authors.initials: N
authors.lastname: Saratz
authors.forename: A
authors.initials: A
authors.lastname: Lichtenberger
authors.forename: O
authors.initials: O
authors.lastname: Portmann
authors.forename: U
authors.initials: U
authors.lastname: Ramsperger
authors.forename: A
authors.initials: A
authors.lastname: Vindigni
authors.forename: D
authors.initials: D
authors.lastname: Pescia