Synthesis and characterization of nanoparticles of Ba2EuZrO5.5: A new complex perovskite ceramic oxide

Citation
R. Jose et al., Synthesis and characterization of nanoparticles of Ba2EuZrO5.5: A new complex perovskite ceramic oxide, J MATER RES, 15(10), 2000, pp. 2125-2130
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS RESEARCH
ISSN journal
08842914 → ACNP
Volume
15
Issue
10
Year of publication
2000
Pages
2125 - 2130
Database
ISI
SICI code
0884-2914(200010)15:10<2125:SACONO>2.0.ZU;2-Q
Abstract
Nanoparticles of barium europium zirconate, a complex perovskite oxide, wer e synthesized using a modified self-propagating combustion synthesis. The s olid combustion products thus obtained were characterized by x-ray and elec tron diffraction, differential thermal analysis, thermogravimetric analysis , infrared spectroscopy, particle-size analysis, surface area determination , gas adsorption studies, and high-resolution transmission electron microsc opy. According to the results of the x-ray and electron diffraction, as-pre pared powder showed the single phase of barium europium zirconate (Ba2EuZrO 5.5) without another phase and had a complex cubic perovskite (A(2)BB'O-6) structure. The transmission electron microscopic investigation showed a mea n grain size of 38 nm with a standard deviation of 12 nm. High-resolution l attice imaging of the nanoparticles indicated the possibility of finer crys tallite in the particle having the same orientation. The nanoparticles of B a2EuZrO5.5 obtained by the present method could be sintered to 97% theoreti cal density at a relatively low temperature of 1525 degrees C.