LAUSR

Abstract Plate-shaped BaZn2Fe16O27 and rod-shaped BaZn2Fe16O27 were prepared by chemical precipitation method, and XRD, SEM, FT-IR and VSM techniques were used to investigate their synthesis processes, magnetic properties. The experimental results show that the formation processes of plate-shaped BaZn2Fe16O27 and rod-shaped BaZn2Fe16O27 follow similar routes and the formation of plate-shaped BaZn2Fe16O27 occurred at a lower temperature (900 °C) than that of rod-shaped BaZn2Fe16O27 (1000 °C). The plate-shaped BaZn2Fe16O27 presents higher saturation magnetization (68.68 emu/g) and lower coercivity (317.31Oe) than the rod-shaped BaZn2Fe16O27. The analysis indicates that the plate-shaped BaZn2Fe16O27 owns better crystallinity than the rod-shaped BaZn2Fe16O27 and the crystallinity difference origins from the use of template in synthesis of rod-shaped BaZn2Fe16O27. The crystallinity and morphology greatly affect the magnetic behaviors of plate-shaped BaZn2Fe16O27 and rod-shaped BaZn2Fe16O27. The saturation magnetization depends on the crystallinity, and the shape anisotropy plays an important role in the coercivity.