mu SR on Co1-xPdx, an alloy exhibiting ferromagnetism in the liquid phase

Transverse-held measurements of the muon-spin precession frequency and rela xation rate in liquid supercooled and solid Co1-xPdx (0.1 less than or equa l to x less than or equal to 0.3) show the characteristic behaviour of a fe rromagnet. On decreasing the sample temperature from above its Curie-temper ature T-C, the precession frequency decreases, while the relaxation rate in creases and diverges on approaching T-C. Close to T-C the temperature depen dence of the inverse frequency shift is in good agreement with susceptibili ty measurements. In the solid phase, the magnetic field at the muon strongl y decreases with the addition of palladium; for x = 0.2 it is only 10% of t he field in pure cobalt. (C) 2000 Elsevier Science B.V. All rights reserved .