What is the difference between nickel-zinc ferrite cores and manganese-zinc ferrite cores?

Nickel-zinc Ni-Zn is used in applications with frequencies of 2 MHz and higher, and require low permeability. When permeability is increased in Ni-Zn cores, the Néel similar to Curie temperature decreases. Manganese-zinc Mn-Zn is used in applications where operating frequencies are up to 5 MHz and require high permeability.

Mn-Zn cores offer permeability up to 20,000 while maintaining a relatively high Néel temperature. More.

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