Egy mágnest milyen picire lehet feldarabolni, ha megvannak hozzá az adott eszközök?

Gondolom a mágneses domének méretét keresed. Ezekre viszont eléggé eltérő adatok vannak.

"In most materials the domains are microscopic in size, around 10^−4 - 10^−6 m[citation needed]"

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"Typical dimensions of domains are 0.1 to 1 mm. " (??)

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"Magnetic materials normally split up in magnetic domains with different magnetization directions. The driving force for this is the magnetostatic energy. Frenkel and Doefman [35] made some calculations of typical dimensions for magnetic domains in ferromagnetic crystals and found that there is a minimum domain size. They therefore concluded that crystals with dimensions smaller than this size do not split up into magnetic domains and therefore can be permanently magnetized. This is essential when particles are used for magnetic data storage. Frenkel and Doefman found that the critical size for single-domain behavior is around 100 nm. " (10^-7 m)

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