User:Chaiken/sandbox

Material	Coercivity
Permalloy, Ni₈₁Fe₁₉	0.5-1
Co	20
Ni	150
Ni_1-xZn_xFeO₃, a microwave material	15-200
Alnico, a common refrigerator magnet	1500-2000
CoPtCr disk drive recording media	1700
NdFeB	10,000
SmCo	40,000