RELAXATION AND RESONANCE IN FERROFLUIDS

Authors
FANNIN PC SCAIFE BKP CHARLES SW
Citation
Pc. Fannin et al., RELAXATION AND RESONANCE IN FERROFLUIDS, Journal of magnetism and magnetic materials, 122(1-3), 1993, pp. 159-163
Citations number
14
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
122
Issue
1-3
Year of publication
1993
Pages
159 - 163
Database
ISI
SICI code
0304-8853(1993)122:1-3<159:RARIF>2.0.ZU;2-K
Abstract
Measurement of the complex, frequency-dependent, relative susceptibili ty of a number Of ferrofluids have been made in the frequency range 10 Hz 500 MHz. These measurements have revealed the presence of Brownian and Neel relaxation and in addition, for the first time, a resonance behaviour characterised by the real part of the susceptibility going n egative above a frequency in the range 30-60 MHz.