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Studies on the magnetic properties of amorphous Ni-Mn-P-B-Al alloys.
G. Kote, L. Hedman, K. V. Rao, D. Dahlberg
J. Appl. Phys. 55 p. 1726 (1984).
Abstract: Magnetic properties of amorphous (Ni/sub 1-x/Mn/sub x/)/sub 75/P/sub 16/B/sub 6/Al/sub 3/ alloys have been probed using transverse magnetoresistance (in fields up to 9 T), and susceptibility measurements (in low fields using a SQUID magnetometer, and at high fields of up to 1 T using a Faraday balance), in the temperature range 4-300K. Low field susceptibility data show a spin-glass type of behavior for alloys with x[right angle bracket]0.1. At low concentrations of Mn the spin freezing temperature T/sub f/ is found to increase linearly with x. A maximum value of T/sub f/=61K is observed for the alloy with x=0.6. Analyses of the high field susceptibility data indicates that in this amorphous matrix Ni does not carry a moment. The transverse magnetoresistance is found to be negative at all temperatures and applied fields, and for T[right angle bracket]2T/sub f/ the magnetoresistance is found to have a quadratic field dependence. (6 References).
last modified:
10.Jun.2002
by Thomas Gredig