fig1
Figure 1. (A) Crystal structure of BaFe2Fe16O27. The local bonding of Ba and Fe (at 6g and 4e sites) ions are highlighted. (B) Powder XRD patterns of BaFe2-xCoxFe16O27 (x = 0, 0.2, 0.4, 1.0) hexaferrites. (C) Raman spectra and (D-G) SEM surface images of
