The Student Room Group
Reply 1
They are small (200nm ish) bits of crystalline material with a single magnetic domain.
Reply 2
single domain meaning what exactly- only one orientation/alignment throughout the particle?--- which does actually make sense!!!!!! Could you confirm what im thinking is right....?

BUT Thank you!
You're a star!
Reply 3
Yep, the B fields of all the atoms throughout the particle are all aligned (Hence one magnetic domain). :smile:

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