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Magnetic viscosity and texture in NdFeB magnets
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The dependence of the magnetic viscosity on texture can be used to study a model recently proposed by Givord and co-workers to describe the angular dependence of the coercive field in NdFeB magnets. We have measured the magnetic viscosity parameter Sv for samples of Magnequench (MQ) II and III as a function of magnetic field H and temperature T above room temperature. Near room temperature, Sv for MQ II is smaller than for MQ III, while for temperatures above ∼70 °C, the opposite behavior is observed. This temperature dependence is discussed and compared with that observed in sintered NdFeB and NdDyFeB magnets.
Title: Magnetic viscosity and texture in NdFeB magnets
Description:
The dependence of the magnetic viscosity on texture can be used to study a model recently proposed by Givord and co-workers to describe the angular dependence of the coercive field in NdFeB magnets.
We have measured the magnetic viscosity parameter Sv for samples of Magnequench (MQ) II and III as a function of magnetic field H and temperature T above room temperature.
Near room temperature, Sv for MQ II is smaller than for MQ III, while for temperatures above ∼70 °C, the opposite behavior is observed.
This temperature dependence is discussed and compared with that observed in sintered NdFeB and NdDyFeB magnets.
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