Effect of hole doping on the structure and magnetic properties of hexagonal Zr0.2Lu0.8FeO3 ceramics

S Dua,P S Anil Kumar,S Pittala

doi:10.1088/1757-899x/577/1/012080

Abstract

Zr4+ doped multiferroic LuFeO3 (LFO) samples were prepared by a sol-gel reaction method and the effect of doping on structural, electric and magnetic properties are evaluated and compared with pure LFO. X-ray diffraction and Rietveld refinement confirm that the pure and Zr doped LFO exists in the hexagonal crystal structure with space group P63cm. The unit cell parameters and the volume of Zr0.2Lu0.8FeO3 (ZLFO) are greater than that of the undoped LFO. Magnetic measurements for ZLFO sample show a weak ferromagnetic-like behaviour at room temperature with Mr ∼ 0.013 emu/g and finite coercivity. Hence, the paramagnetic LFO transformed to the weak ferromagnetic at room temperature upon Zr doping.

Highlights

Room temperature multiferroics are very important and quite interesting as they have the applications in spintronics and memory devices [1]
In order to have the magnetic ordering of LuFeO3 at room temperature (RT) in the hexagonal phase, such that the multiferroic properties can be utilised in practical circumstances, one method that can be adopted is doping the LuFeO3 by cations like Zr+4, Ca+2, Sr+2, Ba+2 in place of Lu+3
It can be seen that the XRD reflections in both the diffraction patterns are exactly lined up according to the standard hexagonal LuFeO3 phase (ICSD#:183152) which indicates that the hexagonal structure is stable for the doped multiferroic (ZLFO)

Summary

Introduction

Room temperature multiferroics are very important and quite interesting as they have the applications in spintronics and memory devices [1]. Zr4+ doped multiferroic LuFeO3 (LFO) samples were prepared by a sol-gel reaction method and the effect of doping on structural, electric and magnetic properties are evaluated and compared with pure LFO. X-ray diffraction and Rietveld refinement confirm that the pure and Zr doped LFO exists in the hexagonal crystal structure with space group P63cm.

Results

Conclusion