Lanthanum doped multiferroic DyFeO3: Structural and magnetic properties

Authors

Yi Du, University of WollongongFollow
Zhenxiang Cheng, University of WollongongFollow
Xiaolin Wang, University of WollongongFollow
S X. Dou, University of WollongongFollow

RIS ID

32914

Publication Details

Du, Y, Cheng, Z, Wang, XL & Dou, SX (2010), Lanthanum doped multiferroic DyFeO3: Structural and magnetic properties, Journal of Applied Physics, 107(9), pp. 1-3.

Abstract

Lanthanum doped multiferroic DyFeO₃ was synthesized by solid state reaction. X-ray diffraction and refinement show that the lattice parameters of Dy_1−xLa_xFeO₃ increase linearly with the La content. Raman spectroscopy reveals that the short-range force constant in Dy_1−xLaxFeO₃ is decreased by La³⁺ ion substitution. The spin reorientation phase transition temperature (T_SRPT) is observed to decrease along with the doping level. The antiferromagnetic ordering temperature T_N of Fe³⁺ ions is depressed with increasing doping level. Both decreasing T_SRPT and decreasing T_N indicate that Fe–Dy and Fe–Fe interactions are weakened by La substitution. It is found that the electron configuration of Fe³⁺ is high spin state and not affected by the La doping in all the samples above T_N.