Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 448, Issue -, Pages 117-122Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2017.05.052
Keywords
Magnetic nanoparticles; Hexagonal ferrites; Raman spectra; Hexagonal ferroelectricity; Multiferroics
Funding
- UGC under Dr. D S Kothari postdoctoral fellowship scheme
Ask authors/readers for more resources
Single phase polycrystalline LuFe1-xNixO3 (x = 0 - 0.3) (LFNO) nanoparticles are synthesized using the sol-gel method. X-ray diffraction measurements revealed that the crystal structure of Ni-doped samples is isomorphic to hexagonal LuFeO3 (LFO). The phase pure hexagonal P6(3)cm symmetry exists for 0 < x < 0.3, and the secondary phases appear for x > 0.4. Raman spectra show a shift in the mode frequency corresponding to the changes in Lu-O and Fe-O bond lengths with Ni doping. An enhancement in the magnetization is observed for LFNO throughout the temperature range (400-5 K) compared to LFO. The antiferromagnetic state of LFO becomes ferrimagnetic at low temperatures, and a net magnetization is observed at room temperature with Ni doping. As Ni concentration increases, a systematic increment in the ferroelectric polarization is observed. This enhancement in polarization is believed to be due to the distortion in FeO5 cage, while the improvement in magnetic properties is due to the induced magnetic interactions, caused by the Fe-Ni interactions on the triangular lattice with Ni doping in LuFeO3. (C) 2017 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available