INVESTIGADORES
BILLONI Orlando Vito
artículos
Título:
Anisotropy-based mechanism for zigzag striped patterns in magnetic thin films
Autor/es:
ORLANDO V. BILLONI; SEBASTIAN BUSTINGORRY; MARIANA BARTUREN; JULIÁN MILANO; SERGIO A. CANNAS
Revista:
PHYSICAL REVIEW B
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2014
ISSN:
1098-0121
Resumen:
In this work, we studied a two-dimensional ferromagnetic system using
Monte Carlo simulations. Our model includes exchange and dipolar
interactions, a cubic anisotropy term, and uniaxial out-of-plane and
in-plane ones. According to the set of parameters chosen, the model
including uniaxial out-of-plane anisotropy has a ground state which
consists of a canted state with stripes of opposite out-of-plane
magnetization. When the cubic anisotropy is introduced, zigzag patterns
appear in the stripes at fields close to the remanence. An analysis of
the anisotropy terms of the model shows that this configuration is
related to specific values of the ratio between the cubic and the
effective uniaxial anisotropy. The mechanism behind this effect is
related to particular features of the anisotropy's energy landscape
since a global minima transition as a function of the applied field is
required in the anisotropy terms. This mechanism for zigzag formation
could be present in monocrystal ferromagnetic thin films in a given
range of thicknesses.