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Title: Anomalous magnetic viscosity in bulk-amorphous materials
Authors: Wang, L.
Ding, J. 
Li, Y. 
Feng, Y.P. 
Wang, X.Z. 
Issue Date: Dec-1999
Citation: Wang, L., Ding, J., Li, Y., Feng, Y.P., Wang, X.Z. (1999-12). Anomalous magnetic viscosity in bulk-amorphous materials. Journal of Magnetism and Magnetic Materials 206 (3) : 127-134. ScholarBank@NUS Repository.
Abstract: The demagnetization processes and the magnetic viscosity have been studied on a bulk-amorphous Nd60Fe30Al10 rod at room temperature. Many unique magnetic properties have been found in this novel hard magnetic material. A clear hysteresis was present on the minor loops, though the total and irreversible susceptibilities exhibited single-phase magnet behavior. A significant magnetic viscosity was evident at positive fields. A large magnetic viscosity was found at negative fields close to the coercivity. The time-dependent magnetization curves were not logarithm-linear and could be well fitted with a logarithm power series with N = 6. The fluctuation field was strongly dependent on the magnetic field. The activation volume was calculated to be 15-60×10-18 cm3. The magnetic viscosity on the minor loops was measured. A non-monotonic behavior was found.
Source Title: Journal of Magnetism and Magnetic Materials
ISSN: 03048853
DOI: 10.1016/S0304-8853(99)00548-X
Appears in Collections:Staff Publications

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