Seyoum, H.
, Bennett, L.
and Della Torre, E.
(2021),
Temporal and Temperature Variations of DC Magnetic Aftereffect Mesurements of Fe<sub>3</sub>O<sub>4</sub> Powders, Journal of Applied Physics
(Accessed October 18, 2025)
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Temporal and Temperature Variations of DC Magnetic Aftereffect Mesurements of Fe3O4 Powders
Published
Author(s)
H. Seyoum, ,
Abstract
The temperature variation of the magnetic relaxation process obtained from DC magnetization measurements are investigated in fine Fe3O4 powder in the temperature range 5 K < T < 300 K. The maximum decay rate, S= d(M)/d[ln(t)], shows two distinct relaxation processes. The two processes remarkably display same pronounced peaks at 10, 35, 60 and 85 K below Verwey transition (TV) and different behavior above TV. At the same time, high field irreversibility in M (T) curves in zero-field cooled and field cooled (ZFC-FC) processes and considerable increase in coercivity have also been observed below TV. This is related to the freezing of disordered spins in a reorganization of domain structure.Citation
Journal of Applied Physics
Pub Type
Journals
Keywords
DC magnetic aftereffect measurement, magnetic relaxation, temperature variations, temporal variations
Citation
Issues
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Created October 12, 2021