Vol.
XXVII, No. 4, Pp. 333-408
December 2012
UDC 621.039+614.876:504.06
ISSN 1451-3994
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Pages: 351-354
Authors: Aboalqasim Alqat, Zohra Gebrel, Vojislav Spasojević, Vladan Kusigerski, Snežana Bošković, and Jovan Blanuša
Abstract
The electron-doped magnetic nanoparticles of Ca1-xYxMnO3 (x = 0, 0.05, 0.10, 0.15, 0.20, and 0.30) manganite with an average particle size of 50 nm are analyzed and discussed in relation to their bulk counterparts. Nanoparticle samples show dominant anti-ferromagnetic ordering with a significant increase of coercivity, with the maximum value of 0.9 T for x = 0. Particle size reduction in Ca1-xYxMnO3 retains the bulk-like magnetic behavior of samples having up to 15% of Y3+, with the small ferromagnetic contribution from disordered surface spins. Suppression of charge ordering state and enhancement of saturation magnetization were found in samples with higher Y3+ concentration (x = 0.2, 0.3), indicating high ferromagnetic contribution in these samples.
Key words:
electron-doped manganite, nanostructure, magnetic property
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