Title :
Magnetic properties of bulk amorphous Ho4Fe3
Author :
Apostolov, Alex ; Christov, Ch. ; Mikhov, M. ; Sheludko, N. ; Skumryev, V. ; Mydlarz, T. ; Sassik, H.
Author_Institution :
Sofia University, Sofia, Bulgaria
fDate :
9/1/1986 12:00:00 AM
Abstract :
The magnetic properties of a-Ho4Fe3ribbons are investigated from 4.2 K to 300 K in permanent magnetic fields up to 140 kOe. The paramagnetic-magnetic ordered state transition temperature is found to be Tc= 140 K. "Re-entrant" transition from magnetic ordered to spin-glass-like state is observed at 55 K. The number of magnetic peculiarities as: strong magnetic dependent Hopkinson effect, high coercivity at low temperatures (Hc= 6 kOe at 4.2 K), large magnetic aftereffect and paraprocess are typical of the later state. The magnetic behavior of the alloy investigated is compared with that of a-Ho4Co3alloy investigated recently.
Keywords :
Amorphous magnetic materials/devices; Magnetic thermal factors; Amorphous magnetic materials; Amorphous materials; Iron; Magnetic anisotropy; Magnetic field measurement; Magnetic properties; Magnetization; Perpendicular magnetic anisotropy; Temperature dependence; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1986.1064556
