The temperature dependence of the coercivity of a random array of uniaxial single domain particles

Calculations of the temperature dependence of the coercivity of a random array of non-interacting single domain particles of uniaxial anisotropy are presented. The extent of the coercivity variation in a given temperature range is found to depend upon the particle volumes, as well as on the anisotropy energy. Under special circumstances, these variations may be regarded as being approximately linear.