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Journal of Nanotechnology
Volume 2011 (2011), Article ID 365378, 5 pages
http://dx.doi.org/10.1155/2011/365378
Research Article

Structure and Magnetic Properties of Fe5O12 (, and 2.0) Thin Films Prepared by Sol-Gel Method

School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor, 43600 Bangi, Malaysia

Received 18 February 2011; Accepted 9 March 2011

Academic Editor: Mallikarjuna Nadagouda

Copyright © 2011 Ramadan Shaiboub et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nanoparticles Fe5O12 (, 1.0, and 2.0) thin films were prepared by sol-gel method and treated at 800, 900, and 1000C, respectively, for 2 h. The films have single phase garnet structure and the sizes of particles are in the range of 44 to 83 nm. The magnetic measurements show that the saturation magnetization decreased with increasing of Er concentration for all samples treated at different annealing temperatures. The saturation magnetization increased with the particle size due to the enhancement of the surface spin effect. The coercivity initially decreased for and then increased for with increasing annealing temperature.