ANHYSTERETIC MAGNETIZATION OF AN ASSEMBLY OF SINGLE-DOMAIN PARTICLES

A kinetic analysis of anhysteretic magnetization is presented that departs from previous analyses by including the time dependence of particle switching. Each particle is assigned a switching probability which depends upon the applied field and its period. The growth of anhysteretic remanence is shown to occur in a narrow range of fields immediately below the particle coercivity. In contrast to previous analyses, the kinetic analysis predicts a finite anhysteretic susceptibility for noninteracting particles that is large but not infinite as previously supposed. © 1969 The American Institute of Physics.