INFLUENCE OF THE PARTICLE SIZE REDUCTION ON MAGNETIC PROPERTIES OF ELECTRON-DOPED Ca1-xYxMnO3

被引：1
|
作者：
Alqat, Aboalqasim [1 ]
Gebrel, Zohra [1 ]
Spasojevic, Vojislav [1 ]
Kusigerski, Vladan [1 ]
Boskovic, Snezana [1 ]
Blanusa, Jovan [1 ]
机构：
[1] Univ Belgrade, Vinca Inst Nucl Sci, Condensed Matter Phys Lab, Belgrade, Serbia
来源：
NUCLEAR TECHNOLOGY & RADIATION PROTECTION | 2012年 / 27卷 / 04期
关键词：
electron-doped manganite; nanostructure; magnetic property;
D O I：
10.2298/NTRP1204351A
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
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.
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收藏
页码：351 / 354
页数：4
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