Magnetic and crystallization studies of splat-cooled praseodymium–gallium–iron alloys

Authors

George C. Hadjipanayis, Industrial Drives Division, Kollmorgen CorporationFollow
S.H. Woollins, Industrial Drives Division, Kollmorgen Corporation, Radford, Virginia
R.C. Hazelton, Industrial Drives Division, Kollmorgen Corporation, Radford, Virginia
K.R. Lawless, University of Virginia, Charlottesville, Virginia
R. Prestipino, University of Virginia, Charlottesville, Virginia
David J. Sellmyer, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

11-1-1982

Comments

Published by American Institute of Physics. J. Applied Physics 53, 7780 (1982). ©1982 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

Magnetic hysteresis and crytallization studies are reported for several (Pr₈₀Ga₂₀)_100-xFe_x metallic glasses, where 30≤x≤80. Thermomagnetic data show the presence of two magnetic phases which are probably responsible for the relatively high coercive fields observed at cryogenic temperatures. As the iron content of the sample is increased, the magnetic moment increases substantially but the coercivity is drastically reduced. In (Pr₈₀Ga₂₀)₇₀Fe₃₀ the observed coercive fields are strongly temperature dependent indicating strong thermal activation effects which are consistent with the magnetic viscosity measurements. The hard magnetic properties disappear after crystallization and the samples appear to be paramagnetic at room temperature. Journal of Applied Physics is copyrighted by The American Institute of Physics.