Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Magnetoelectric Effects in (Bi,La)FeO3-PbTiO3 Ceramics

(Bi,La)FeO3-PbTiO3 세라믹스의 자전효과

  • Lee Eun Gu (Dept. of Advanced Materials Engineering, Chosun University) ;
  • Lee Jong Kook (Dept. of Advanced Materials Engineering, Chosun University) ;
  • Jang Woo Yang (Dept. of Advanced Materials Engineering, Chosun University) ;
  • Kim Sun Jae (Dept. of Advanced Institute of Nano Technologies, Sejong University) ;
  • Lee Jae Gab (School of Advanced Materials Engineering, Kookmin University)
  • Published : 2005.02.01
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Abstract

Magnetoelectric (ME) effects for lanthanum modified $BiFeO_3-PbTiO_3\;(BE-_xPT)$ solid solutions have been investigated. The value of magnetoelectric polarization coefficient, up is 10 times greater than that of $Cr_2O_3$. The results also show that up is due to a linear coupling between polarization and magnetization, and that up is independent of do magnetic bias and ac magnetic field. The ME effect is believed to be significantly enhanced due to breaking of the cycloidal spin state of a long-period spiral spin structure, via randomly distributed charged imperfections.

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References

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