Open AccessInfluence of the particle size reduction on magnetic properties of electron-doped Ca1-xYxMnO3
Author(s) -
Aboalqasim Alqat,
Zohra Ali Mohamed Gebrel,
Vojislav Spasojević,
Vladan Kusigerski,
S. Boskovic,
J. Blanuša
Publication year - 2012
Publication title -
nuclear technology and radiation protection
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.31
H-Index - 16
eISSN - 1452-8185
pISSN - 1451-3994
DOI - 10.2298/ntrp1204351a
Subject(s) - materials science , ferromagnetism , coercivity , condensed matter physics , manganite , particle size , spins , electron , saturation (graph theory) , doping , magnetization , magnetic nanoparticles , nanoparticle , nanotechnology , magnetic field , chemistry , physics , mathematics , quantum mechanics , combinatorics
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 ferro-magnetic contribution in these samples. [Projekat Ministarstva nauke Republike Srbije, br. III45015