The study of a ferrofluid exhibiting both Brownian and Neel relaxation
- 14 January 1989
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 22 (1) , 187-191
- https://doi.org/10.1088/0022-3727/22/1/027
Abstract
The low-field complex susceptibility curves of ferrofluids have in general a Debye-type profile with a loss component which peaks at a frequency from which it is possible to estimate the average relaxation time of the particles in the ferrofluid. The authors report on magnetic measurements on a water-based ferrofluid whose loss curve displayed two distinct peaks. It is concluded that one peak is due to Brownian relaxation and the other is due to a combination of Brownian and Neel relaxation.Keywords
This publication has 8 references indexed in Scilit:
- The field dependence of the complex frequency-dependent susceptibility of magnetic fluidsJournal of Physics D: Applied Physics, 1988
- New technique for measuring the complex susceptibility of ferrofluidsJournal of Physics E: Scientific Instruments, 1986
- Experimental investigations of magnetic fluidsIEEE Transactions on Magnetics, 1980
- Observation of spin glass behaviour in ferrofluidsJournal of Magnetism and Magnetic Materials, 1980
- Magnetic fluidsSoviet Physics Uspekhi, 1974
- Thermal Fluctuations of a Single-Domain ParticlePhysical Review B, 1963
- Thermal Fluctuations of a Single-Domain ParticleJournal of Applied Physics, 1963
- Dispersion and Absorption in Dielectrics I. Alternating Current CharacteristicsThe Journal of Chemical Physics, 1941