Nickel & Nickel Aluminum with Cobalt

Material Type	Saturation Magnetization (4p Ms) gauss	Linewidth (DH) oersteds @ ½ peak *	g-effective *	Dielectric Constant (e')	Dielectric Loss Tangent *	Curie Temp (ºC)	Spin Wave Linewidth DHk (Oe) *
C-9	3150	130	2.22	13.0	0.0007	585	-
C-30	1330	285	2.47	12.7	0.0005	495	-
C-35	950	435	2.72	12.6	0.0005	405	-

* measured at 9.0 GHz

Composition

Type C-9 is a nickel ferrite with a cobalt addition. Types C-30 and C-35 are nickel ferrites with aluminum substitution and cobalt additions. Very exact amounts of cobalt additions are made to reduce the crystalline anisotropy while keeping adverse temperature behavior, and below-resonance magnetic loss to a minimum.

Characteristics and Applications

They offer reduced linewidth and lower g-effective value. Both the dielectric and magnetic loss below resonance are kept to a minimum. Other features include high Curie temperature and good high power operation.