Magnetism and compressive modulus of magnetic fluid containing gels
- 15 June 1999
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 85 (12), 8451-8455
- https://doi.org/10.1063/1.370626
Abstract
We have investigated the magnetism and have measured the compressive modulus of magnetic fluid containing gels, called ferrogels, in the presence of magnetic field. No hysteresis was shown in the magnetization curve of the ferrogel suggesting a super paramagnetic response. The equilibrium compressive modulus of the ferrogel was measured up to 4 kOe and the modulus with field was much higher than that without field. The mean change in modulus increased with increasing magnetic field, and it saturates above 2 kOe. The mean and maximum change in modulus at 4 kOe was 31 and 71 Pa which corresponds to 19% and 46% increases of that without field, respectively. The change in modulus has been analyzed theoretically and is well explained in terms of the magnetism of ferrogels.Keywords
This publication has 11 references indexed in Scilit:
- Conversion of chemical into mechanical energy by synthetic polymers (chemomechanical systems)Published by Springer Science and Business Media LLC ,2005
- Shape Transition of Magnetic Field Sensitive Polymer GelsMacromolecules, 1998
- Ferrogel: a new magneto-controlled elastic mediumPolymer Gels and Networks, 1997
- Advances in ferrofluid technologyJournal of Magnetism and Magnetic Materials, 1995
- Electroosmotic transport of water in polyelectrolyte networksPolymer Bulletin, 1991
- Collapse of Gels in an Electric FieldScience, 1982
- Nonlinear oscillations of a polar-liquid column under unipolar-ion injectionJournal of Applied Physics, 1980
- SuperparamagnetismJournal of Applied Physics, 1959
- Demagnetizing Factors of the General EllipsoidPhysical Review B, 1945
- Demagnetizing Factors of RodsJournal of Applied Physics, 1942