Isochronal annealing studies of a plastically deformed ferromagnetic metal using magnetic hysteresis measurements

An experimental study has been made of magnetic hysteresis in plastically deformed and annealed gadolinium (Gd) metal as a function of annealing temperature. Seven plastically deformed samples were annealed at temperatures ranging from 155° to 916°C; major and minor magnetic hysteresis loops of these seven samples plus one as-deformed sample were examined. The results are discussed in terms of the recovery and recrystallization processes. The measurements of magnetic parameters clearly show three distinct regions of behavior, viz., the regions of annealing temperature Ta<300°C, 300