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Observation of Griffiths-like phase and its tunability in La2Ni1-xCoxCoxO6 (0 <= x <= 1) nanoparticles

Murthy, Krishna J and Chandrasekhar, Devi K and Venimadhav, A (2016) Observation of Griffiths-like phase and its tunability in La2Ni1-xCoxCoxO6 (0 <= x <= 1) nanoparticles. In: International Conference on Magnetic Materials and Applications (ICMAGMA), DEC 02-04, 2015, VIT Univ, Vellore, INDIA, pp. 2-8.

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Official URL: http://dx.doi.org/10.1016/j.jmmm.2016.02.074


Temperature and magnetic field dependent magnetic properties of La2Ni1-xCoxMnO6 (0 <= x <= 1) nanoparticles prepared by sol-gel method with average particle size similar to 25-60 nm have been investigated. X-ray diffraction and Raman spectra study have revealed the suppression of structural disorder with the increase of Co content. Magnetic ordering and magnetization properties like, transition temperature (T-C), coercive field (H-C) and spontaneous magnetization (M-S) increases with the Co substitution at the Ni site. The inverse magnetic susceptibility above T-C has shown a broad temperature regime with a downward deviation from the Curie-Weiss law, a characteristic feature of Griffiths-like phase. This temperature regime of magnetic inhomogeneity decreases with the increase of Co content and completely absent for La2CoMnO6. (C) 2016 Elsevier B.V. All rights reserved.

Item Type: Conference Proceedings
Additional Information: Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 22 Oct 2016 05:48
Last Modified: 28 Oct 2016 06:39
URI: http://eprints.iisc.ac.in/id/eprint/54638

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