Structural Characterization and Magnetic Properties of SrCo2Fe16O27 Hexaferrite Synthesized by Citric Acid Sol-Gel Method

Gallium-substituted X-type hexagonal ferrites Sr2Co2GaxFe28−xO46: effect of substitution and heating temperature on phase formation and magnetic and dielectric properties

“…This could be due to the presence of M and W phases in the system at that temperature, as some SrMe 2 W ferrites are known to have M s values of up to 90 A m 2 kg −1 while remaining very soft ferrites. Although SrCo 2 W has a reported M s of around 77 A m 2 kg −1 33,34 and SrZn 2 W based ferrites have had values reported between 77 and 91 A m 2 kg −1 . 25,35–37 Therefore, this unusually high M s value could be due to the presence of a hither-to unknown gallium-substituted SrCo 2 W phase, and this requires future investigation.…”

“…In the samples heated to 1300 1C, we observe more closely packed grains having more similar shape and sizes, and these are in the range of 5-10 mm reported by Yang et al for SrCo 2 W prepared by a similar citric acid sol-gel method. 33…”