Superparamagnetism and other magnetic features in granular materials: A review on ideal and real systems

Knobel, M. (Instituto de Fisica 'Gleb Wataghin', Universidade Estadual de Campinas CP 6165); Nunes, W.C.; Socolovsky, L.M.; De Biasi, E.; Vargas, J.M.; Denardin, J.C.

Source: Journal of Nanoscience and Nanotechnology, v 8, n 6, June, 2008, p 2836-2857

ISSN: 1533-4880

Publisher: American Scientific Publishers

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. Copyright © 2008 American Scientific Publishers All rights reserved. (159 refs.)

terms:  Magnetic materials  -  Magnetism  -  Paramagnetism  -  Superparamagnetism