Site-selective cobalt substitution in La-Co co-substituted magnetoplumbite-type ferrites: ${}^{59}$Co-NMR and DFT calculation study

Hiroyuki Nakamura, Hiroto Ohta, Ryuya Kobayashi +4

The La-Co co-substituted magnetoplumbite-type (M-type) ferrites $A$Fe${}_{12}$O${}_{19}$ ($A$ = Ca, Sr and Ba, ion sizes Ca${}^{2+}$ $<$ Sr${}^{2+}$ $<$ Ba${}^{2+}$) with Co compositions aro…