Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Preparation and properties of multiferroic bismuth iron oxides

  • Nam, Joong-Hee (Advanced Materials & Components Lab., Korea Institute of Ceramic Engineering and Technology) ;
  • Joo, Yong-Hui (Advanced Materials & Components Lab., Korea Institute of Ceramic Engineering and Technology) ;
  • Cho, Jeong-Ho (Advanced Materials & Components Lab., Korea Institute of Ceramic Engineering and Technology) ;
  • Chun, Myoung-Pyo (Advanced Materials & Components Lab., Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Byung-Ik (Advanced Materials & Components Lab., Korea Institute of Ceramic Engineering and Technology)
  • Published : 2009.04.30
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Abstract

The compositional dependence of bismuth iron oxides and effect of La-substitutions in the structure of $BiFeO_3$ compounds were investigated, which compounds were synthesized by conventional ceramic processing. It is shown that some of bismuth iron oxides including $BiFeO_3$ show the narrow single phase region. The effect of La-doping in $BiFeO_3$ was presented as disappearance of many impurity phases of Bi-Fe-O compounds. The lower electrical resistivity was obtained as those compositions of Fe deficient region and La-doped $BiFeO_3$. The saturation magnetization of La-doped $BiFeO_3$ was increased with La content. The dielectric dispersion was also observed for those Bi-Fe-O compounds with Fe deficient and La-doped $BiFeO_3$ at low frequencies under 1 kHz.

Keywords

References

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