Spin-glass behavior of Zr(FexCr1-x)(2) compounds

The magnetic properties of C14 Laves-phase Zr(FexCr1-x)(2) (M less than or equal to x less than or equal to 0.85) alloys have been investigated. Arrot t plots showed evidence of ferromagnetic ordering for alloys with x > 0.7 b ut not for x = 0.7. Zero field cooling field cooling magnetization and Moss bauer spectroscopy data indicated spin-glass-like freezing for the sample w ith x = 0.7 and a reentrant spin-glass behavior for samples with x > 0.7. D ynamical behavior of the spin-glass sample (x = 0.7) was studied by means o f AC susceptibility. Two critical lines described by \T-f (H) - T(0)\ simil ar to H-2/delta were obtained with delta = 4.4 and 2.5, respectively. (C) 2 001 Elsevier Science B.V. All rights reserved.