Synthesis and Characterization of X-type Barium Ferrite Nanocrystals

Abstract

Abstract: Nanostructured samples of X-type Ba₂Co₂Fe₂₈O₄₆ hexagonal ferrite have been prepared by using the stearic acid gel method. The nanocrystalline hexaferrite powders obtained at 750 ℃ were spherical in shape with grain sizes in the range of 15～25 nm. With increasing calcining temperature, the particles become a plate-like structure. The magnetic properties of Xtype barium ferrite nanocrystals were measured by using Vibrating Sample Magnetometer(VSM). The results indicate that the magnetic properties of the title products are different from those of the common X-type hexaferrites with a lower specific saturation magnetization( σ_s). Coercivity force( H_c) and the specific saturation magnetization( σ_s) of the products are influenced by the particles sizes.

Key words: Nanocrystal, X-type barium ferrite, Magnetic property

CLC Number:

TrendMD:

XIONG Gang, YANG Xu-Jie, WANG Xiao-Hui, LU Lu-De, WANG Xin . Synthesis and Characterization of X-type Barium Ferrite Nanocrystals[J]. Chem. J. Chinese Universities, 1998, 19(9): 1467.

References

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