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Roodles01
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From another thread I think I understand that ferromagnetic material can exist any time, but dia & para magnetic materials exist only when there is an external field.
My overview is
Macroscopically ferro materials have to align their domains & can remain aligned when field is removed, leaving permanent dipoles.
Para materials have relatively few permanent dipoles & are less likely to remain permanent.
Diamagnetism only exists to oppose any external field in accordance with Lenz's law.
Could someone confirm or clarify this set of statements, please.
My overview is
Macroscopically ferro materials have to align their domains & can remain aligned when field is removed, leaving permanent dipoles.
Para materials have relatively few permanent dipoles & are less likely to remain permanent.
Diamagnetism only exists to oppose any external field in accordance with Lenz's law.
Could someone confirm or clarify this set of statements, please.