title: Superparamagnetism and other magnetic features in granular materials: a review on ideal and real systems.
abstract: An overview on magnetic of nanostructured magnetic materials is presented, with particular emphasis on the basic features displayed by granular nanomagnetic solids. Besides a review of the basic concepts and experimental techniques, the role of structural disorder (mainly the distribution of grain sizes), interparticle magnetic interactions and surface effects are also discussed with some detail. Recent results, models and trends on the area are also discussed.
authors.affiliation: Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas CP 6165, 13083-970 Campinas (SP), Brazil.
authors.forename: M
authors.initials: M
authors.lastname: Knobel
authors.forename: W C
authors.initials: WC
authors.lastname: Nunes
authors.forename: L M
authors.initials: LM
authors.lastname: Socolovsky
authors.forename: E
authors.initials: E
authors.lastname: De Biasi
authors.forename: J M
authors.initials: JM
authors.lastname: Vargas
authors.forename: J C
authors.initials: JC
authors.lastname: Denardin