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Enhanced room temperature multiferroic characteristics in hexagonal LuFe1-xNixO3 (x=0-0.3) nanoparticles

Suresh, Pittala and Laxmi, K Vijaya and Kumar, P S Anil (2017) Enhanced room temperature multiferroic characteristics in hexagonal LuFe1-xNixO3 (x=0-0.3) nanoparticles. In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 448 (SI). pp. 117-122.

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Official URL: http://dx.doi.org/10.1016/j.jmmm.2017.05.052

Abstract

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.

Item Type: Journal Article
Additional Information: International Conference on Magnetic Materials and Applications (ICMAGMA), Hyderabad, INDIA, FEB 01-03, 2017 Copy right for this article belongs to the
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 20 Jan 2018 07:00
Last Modified: 20 Jan 2018 07:00
URI: http://eprints.iisc.ac.in/id/eprint/58797

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