Abstract
La or Pr substituted barium hexaferrites, Ba 1− x (La or Pr) x Fe 12O 19, x=0.00–0.20, were successfully prepared by a citrate combustion process. The sintered bodies were structurally and magnetically studied by powder X-ray diffraction (XRD) and vibrating sample magnetometry (VSM). All XRD patterns show the single phase of the magnetoplumbite barium ferrite without other intermediate phases. Magnetization ( M S) and coercive field ( H C) could be improved by substitutions of La or Pr ions on Ba ion basis sites. The M S reveal magnetic behavior with respect to La or Pr ions content, showing an increase at first and then a decrease. The H C increases remarkably with increasing La or Pr ions content.
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