Eur. Phys. J. AP
Volume 8, Number 3, December 1999
|Page(s)||247 - 251|
|Published online||15 December 1999|
A study of the frequency dependent susceptibility of a colloidal suspension of manganese ferrite (MnFe204) nanoparticles
Department of Electronic & Electrical Engineering, Trinity College, Dublin 2,
2 Laboratoire de Recherche sur les Capteurs à Colloides et L'Instrumentation, LRCCI, Université Jean-Monnet, 42023 Saint-Etienne Cedex 2, France
3 Laboratoire de Physicochimie Inorganique, L12C, Colloides Magnetiques, Université P. et M. Curie, Bât. F, Case 740, 63 Place Jussieu, 75252 Paris Cedex 05, France
Corresponding author: email@example.com
Revised: 8 November 1999
Accepted: 9 November 1999
Published online: 15 December 1999
Measurements of the complex, frequency dependent susceptibility, χ(ω) = χ′ (ω) − i χ′′ (ω) over the frequency range 50 MHz to 15 GHz, of a surfacted ferrofluid comprising MnFe204 ferrite particles in dibutylphthalat (DBP), as a function of a biasing magnetic field are presented. The biasing field was varied over the range 0 to 100 kAm−1, and has enabled average values of anisotropy constant, , and anisotropy field for the sample to be determined. Ferromagnetic resonance was exhibited for all values of the biasing field, covering the range 1.2 to 8.5 GHz, with the χ′ (ω) component of the susceptibility going negative in the GHz region.
PACS: 75.50.Tt – Fine-particle systems / 75.50.Mm – Magnetic liquids
© EDP Sciences, 1999
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.