Grande conférence iLM

Vendredi 14 Octobre 2011 à 14h00.

IEEE Distinguished lecturer

''Various magnetic thin films are used for recording media and heads of hard disk drives. The magnetic properties have been greatly improved to cope with a continuous areal density increase of more than 10^4 times over the past quarter century. The improvement has been realized by tailoring the composition and the microstructure of magnetic thin films. This lecture covers the technology and the physics for controlling the microstructure of magnetic thin films, focusing mainly on perpendicular recording media and related magnetic materials. Initially, technological developments will be briefly reviewed and then the following topics will be discussed: nucleation and growth of magnetic thin films through heteroepitaxy on nonmagnetic underlayers, nanostructure and nano-composition characterization, application to perpendicular magnetic recording media, magnetization structure analysis, epitaxial growth of single-crystal magnetic thin films with metastable and ordered crystal structures, and patterned-type perpendicular recording media for higher densities. The relationships between film microstructure and magnetic properties will also be discussed. - Salle de Séminaire du département de Physique, Université de Lyon - Domaine Scientifique de la Doua, RDC du Bât Lippman, 12 Rue AMPERE - Villeurbanne.''