title: Cracks in magnetic nanocrystal films: do directional and isotropic crack patterns follow the same scaling law?
abstract: In this letter, we show that the use of nanocrystals enables new insights into the scaling law of crack patterns. Directional and isotropic crack patterns made of gamma-Fe2O3 nanocrystals follow the same scaling law, with the film height varying by 3 orders of magnitude. A simple two-dimensional computer model for elastic fracture also leads to the same scaling behavior for directional and isotropic cracks, in good agreement with the experiments.
authors.affiliation: Laboratoire des Matériaux Mésoscopiques et Nanométriques (LM2N), UMR CNRS 7070, Université Pierre et Marie Curie, Paris Cedex, France.
authors.forename: Anh Tu
authors.initials: AT
authors.lastname: Ngo
authors.forename: Johannes
authors.initials: J
authors.lastname: Richardi
authors.forename: Marie Paule
authors.initials: MP
authors.lastname: Pileni