Title :
Effects of annealing on the coercivity of amorphous TbFe2
Author :
Savage, H.T. ; Clark, A.E. ; Pickart, S.J. ; Rhyne, J.J. ; Alperin, H.A.
Author_Institution :
Naval Ordnance Laboratory, Silver Spring, Maryland
fDate :
9/1/1974 12:00:00 AM
Abstract :
Annealing studies of initially amorphous TbFe2show a large increase in the coercive force at the onset of recrystallization. The coercivity increases from ≈100 Oe in the amorphous state to 3.75 kOe after a 525°C anneal. Neutron diffraction establishes the crystallite size as 100 A ±10A after a 415°C anneal and 150 A ±10A after a 525°C anneal. Following the 525°C anneal this material exhibited an energy product of 8.7 MGO (1 MGO = 106ergs/cm3) indicating considerable promise for recrystallized RFe2materials in permanent magnet applications.
Keywords :
Annealing; Coercive forces; Magnetic thermal effects; Terbium-iron alloys; Amorphous materials; Annealing; Coercive force; Crystallization; Diffraction; Laboratories; Magnetic materials; Magnetization; Neutrons; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1974.1058486
