I mean the diagram describing the change in coercivity with the volume of nanocrystalline grain. Of course, for soft magnetic materials. I understand this relationship but I mean the explanation regarding the domain structure.
Radovan Bures
In case of large grains - 1/D part, coercivity is determined by domain wall pinning. Size of grains in D^6 part is close to ferromagnetic exchange length. For very small grains, size of domains could be larger than grain size.
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Alexander T. Morchenko
Perhaps: “For very small grains, the size of domains could be larger than grain size”, and domains during their movement ‘do not feel’ the grain boundaries....?
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Sergey V Komogortsev
Chek this
Article Magnetic Microstructure of Amorphous, Nanocrystalline,and Na...
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