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Issue 11, 2013
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Magnetic properties of double perovskite La2BMnO6 (B = Ni or Co) nanoparticles

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Abstract

Double perovskite La2BMnO6 (B = Ni and Co) nanoparticles with average particle size of ∼50 nm were synthesized using a facile, environmentally friendly, and scalable molten-salt reaction at 700 °C in air. Their structural and morphological properties were characterized by X-ray diffraction and transmission electron microscopy. Their magnetic properties were evaluated and compared using dc magnetic MT and MH, and ac magnetic susceptibility versus frequency, temperature, and field for the first time. The dc magnetization curves show paramagnetic–ferromagnetic transitions at TC ∼ 275 and 220 K for La2NiMnO6 (LNMO) and La2CoMnO6 (LCMO) nanoparticles, respectively. ac susceptibility revealed that the LCMO nanoparticles had a single magnetic transition indicative of Co2+–O2−–Mn4+ ordering, whereas the LNMO nanoparticles showed more complex magnetic behaviors suggesting a re-entrant spin glass.

Graphical abstract: Magnetic properties of double perovskite La2BMnO6 (B = Ni or Co) nanoparticles

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Article information


Submitted
16 Feb 2013
Accepted
31 Mar 2013
First published
08 Apr 2013

Nanoscale, 2013,5, 4720-4728
Article type
Paper

Magnetic properties of double perovskite La2BMnO6 (B = Ni or Co) nanoparticles

Y. Mao, J. Parsons and J. S. McCloy, Nanoscale, 2013, 5, 4720
DOI: 10.1039/C3NR00825H

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