Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Magnetic Properties and Impedance Spectroscopic Studies of Multiferroic Bi1-xNdxFeO3 Materials

  • Thang, Dao Viet (Center for Nano Science and Technology, Hanoi National University of Education) ;
  • Thao, Du Thi Xuan (Department of Physics, Hanoi University of Mining and Geology) ;
  • Minh, Nguyen Van (Center for Nano Science and Technology, Hanoi National University of Education)
  • Received : 2015.07.22
  • Accepted : 2015.12.22
  • Published : 2016.03.31
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Abstract

Nd-doped $BiFeO_3$ materials were synthesized via a sol-gel method. The crystal structure, magnetic properties, and complex impedance spectroscopy of multiferroic $Bi_{1-x}Nd_xFeO_3$ (BNFO) materials were investigated by X-ray diffraction (XRD), Raman scattering, vibrating sample magnetometer (VSM), and complex impedance spectroscopy. Our results show that the lattice crystal constants (a, c) and the ratio c/a of BNFO materials decreased with increasing Nd concentration. All samples exhibited weak ferromagnetism at room temperature, and the magnetization of samples was enhanced by the presence of $Nd^{3+}$ ions. There was an enhancement in the spontaneous magnetization of BFO with increasing Nd concentration, which is attributable to the collapse of the spin cycloid structure.

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