Linked from
The 48 pages that link to Magnetic moment, each with the reason it gives.
Zeeman effectNarrower topic: The field acts on atomic magnetic moments to split their energy levels.
AntiferromagnetismNarrower topic: The ordered units in an antiferromagnet are magnetic moments.
Bohr magnetonNarrower topic: The Bohr magneton is a unit used to express magnetic dipole moments.
Larmor precessionNarrower topic: Precession tracks the changing orientation of this quantity.