Permanent Magnet Oxides Containing Divalent Metal Ions. II

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Abstract
The dependence of saturation induction at room temperature upon composition for the substitution of nonmagnetic ions into BaFe12O19, into BaM2Fe16O27 (where M2=Ni2, Ni1.5Cu0.5, Zn2), and into the mixture BaNiFe14O23 is given. Evidence is presented for the existence of points of magnetic compensation in a number of series wherein aluminum is substituted for iron. The distribution that gallium takes in these structures appears to depend upon the sites occupied by divalent metal ions.