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Please use this identifier to cite or link to this item: https://dspace.ffh.bg.ac.rs/handle/123456789/1065
Title: The dependence of cation distribution, microstrain and magnetic susceptibility on particle size in nanocrystalline Gd<inf>2</inf>O<inf>3</inf>/Y<inf>2</inf>O<inf>3</inf>
Authors: Kremenovic, A.
Antic, B.
Nikolic, A. S.
Blanusa, J.
Jancar, B.
Meden, A.
Mentus, Slavko 
Keywords: Cation distribution;Microstructure;Susceptibility;Synthesis
Issue Date: 1-Dec-2007
Journal: Scripta Materialia
Abstract: 
A novel synthesis route based on thermal decomposition of yttrium and gadolinium complexes with 2,4-pentanedione ligand has been used to synthesize 5 nm size (Y0.9Gd0.1)2O3 powder. Refinement of occupancy parameters revealed that Gd3+ ions preferably occupy C3i sites in host Y2O3, forming a material with a metastable cation distribution. The average crystallite size was found to increase, and the average microstrain to decrease, as the annealing temperature is increased, while the Gd3+ ion distribution remained metastable in nature. Small anisotropic X-ray powder diffraction pattern line broadening due to crystallite size effects was observed. The inverse susceptibility of the 5 nm sample exhibits unusual break in slope to a smaller value below 2.7 K. © 2007 Acta Materialia Inc.
URI: https://dspace.ffh.bg.ac.rs/handle/123456789/1065
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2007.09.002
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University of Belgrade
Faculty of Physical Chemistry
Studentski trg 12-16
11158 Belgrade 118
PAC 105305
SERBIA
University of Belgrade Faculty of Physical Chemistry