The hysteresis loop shape in the ferromagnetic materials depends upon the texture. The rectangular loop in permanent magnets and hysteresis-free loop with linear response in soft msgnetics can be achieved by the tailoring of the texture .
For example, we have influenced the shape of the hysteresis loop creating texture in the ensemble of magnetic filaments inside carbon nanotubes.
Article Magnetic anisotropy in the films of oriented carbon nanotube...
It surely affects the nature of magnetic anisotropy depending on the preferred orientation.....the best known example is the development CRGO steel wherein deliberate strengthening of "GOSS" texture gives a huge boost to the transformer core application (greatly minimizes the core loss). preferential grain orientation results in a small hysteresis area (small energy dissipation per cycle) and high permeability ..........highly affects the coercivity of magnetic thin films...and so on..
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