Linked from
The 15 pages that link to Magnetic permeability, each with the reason it gives.
Magnetic fieldRelated: It describes how materials alter magnetic fields within them.
Skin effectRelated: Higher permeability generally reduces skin depth at a given frequency.
FerriteRelated: Ferrite’s magnetic response matters in iron cores and other magnetic applications.
Hopkinson effectNarrower topic: The effect is defined by a sharp rise in this material property.