Title :
Magnetic behaviour of Co impurity in dilute PtFe alloys: a nuclear orientation study
Author :
Trhlik, M. ; Brewer, W.D. ; De Moor, P. ; Schuurmans, P. ; Severijns, N. ; Vanderpoorten, W. ; Vanneste, L. ; Wouters, J. ; Erzinkyan, A.L. ; Parfenova, V.P. ; Gurevich, G.M. ; Dupak, J.
Author_Institution :
Charles Univ., Prague, Czechoslovakia
fDate :
3/1/1994 12:00:00 AM
Abstract :
Behaviour of the Co magnetic moments in dilute PtFe alloys was studied in the temperature range of 5-50 mK and the external magnetic field range of 0-8.5 T using low-temperature nuclear orientation. Kondo behaviour of Co, known to exist in pure Pt, was found in the sample of lowest concentration only (Pt+0.22 at.% Fe). Large misalignment of the Co magnetic moments was seen, especially for alloys having Fe concentration slightly above the percolation limit 0.76 at.%. An anomaly in the hyperfine field value on the Co nucleus was also found in these alloys
Keywords :
Kondo effect; cobalt alloys; dilute alloys; iron alloys; local moments in dilute systems; magnetic impurity interactions; nuclear polarisation; platinum alloys; 5 to 50 mK; Co magnetic moments misalignment; Kondo behaviour; PtFeCo; dilute PtFe-Co alloys; hyperfine field value; nuclear orientation; Anisotropic magnetoresistance; Cobalt alloys; Impurities; Iron alloys; Magnetic anisotropy; Magnetic fields; Magnetic moments; Perpendicular magnetic anisotropy; Probes; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
