ITINERANT-ELECTRON METAMAGNETISM IN Y1-XZRXCO3

In Y1-xZrxCo3 (0 less than or equal to x less than or equal to 0.1) th e high field magnetization was observed in pulsed fields up to 40 T at 4.2 K, and the transition fields for the itinerant electron metamagne tism were determined in pulsed fields up to 100 T at 10 K. The results show that the itinerant electron metamagnetic transition is induced w hen the effective field acting on the Co, which is the sum of the appl ied and the exchange fields, attains the critical value. (C) 1998 Else vier Science B.V. All rights reserved.