Magnetic properties and hyperfine interactions in the β‴ phase of potassium ferrite

The hyperfine field structure and magnetic susceptibility in the temperature range 5–295 K was measured for the β‴ phase of potassium ferrite. Results show that this new phase has an antiferromagnetic ordering similar to the β phase. The hyperfine‐interaction parameters have been determined and are compared with those found in magnetite, β‐phase potassium ferrite, and barium hexaferrite.