Permanent magnet oxides containing divalent metal ions. II

Abstract

The dependence of saturation induction at room temperature upon composition for the substitution of nonmagnetic ions into BaFe12O19, into BaM2Fe16O27 (where M2=Ni 2, 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. © 1957 The American Institute of Physics.