On the activation volumes of reversal in RE-TM-B-type sintered magnets
- 14 May 1992
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 25 (5) , 838-842
- https://doi.org/10.1088/0022-3727/25/5/014
Abstract
Magnetic viscosity experiments and the calculated results show that there exists a linear relationship between log Hc and log v-1 for RE-TM-B permanent magnets. This result agrees well with the theoretical equation, log Hc=log v-1+FL(T. . .), which was deduced from the localized weak domain-wall pinning model, where Hc is the coercive force, v is the activation volume and FL(T. . .) is a complex function.Keywords
This publication has 12 references indexed in Scilit:
- On the relationship between coercive force Hc and magnetic viscosity parameter Sv in magnetic materialsJournal of Magnetism and Magnetic Materials, 1990
- Magnetic viscosity of magnetic recording mediaJournal of Physics D: Applied Physics, 1990
- Thermal fluctuation field in RE-TM-B permanent magnet materialsIEEE Transactions on Magnetics, 1990
- Magnetic viscosity and switching field distributions in recording mediaIEEE Transactions on Magnetics, 1988
- Magnetic viscosity in NdFeB and SmCo5 alloysJournal of Magnetism and Magnetic Materials, 1987
- Magnetic viscosity and domain wall pinning in an MnAlC permanent magnetJournal of Magnetism and Magnetic Materials, 1985
- Time dependent magnetization of a system of fine cobalt particlesIEEE Transactions on Magnetics, 1981
- Magnetic viscosity in ferromagnetsPhilosophical Magazine, 1976
- Le trainage magnétique de fluctuationAnnales de Physique, 1954
- Théorie du traînage magnétique des substances massives dans le domaine de RayleighJournal de Physique et le Radium, 1950