Chandan Upadhyay I wanted to simulate the magnetism exerted by MnZnFerrite which is in the form of Nano Particle and Micron sized particle, I wanted to study their behaviour and In addition to this I shall establish the same problem to the permanent magnetic material which is in the form of micron sized particles.
To keep in simple, i have a nano particle of MnZn Ferrite and what will happen r how does it exhibit magnetism under constantly varying magnetic field upto 1000 A/m
You can use MUMAX3 as suggested by R. L. Silva. However, the cation distribution is highly size dependent and many a times drastically different than the bulk configuration, this in turn will affect the magnetic responses. You need to include this aspect as well, before taking up the simulation of magnetic response, together with the usual details.