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Thermal Stability of Nanocrystalline Sm 2 O 3 and Sm 2 O 3 –MgO
Author(s) -
Sieger H.,
Suffner J.,
Hahn H.,
Raju A.R.,
Miehe G.
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00840.x
Subject(s) - nanocrystalline material , transmission electron microscopy , microstructure , materials science , scanning electron microscope , thermal stability , analytical chemistry (journal) , aqueous solution , citric acid , high resolution transmission electron microscopy , crystallography , chemical engineering , mineralogy , chemistry , nanotechnology , metallurgy , composite material , chromatography , organic chemistry , engineering
Nanocrystalline Sm 2 O 3 and Sm 2 O 3 –MgO powders have been prepared by spray pyrolysis of aqueous precursor solutions containing citric acid as a complexant. Synthesized powders consist of hollow spheres with thin shells. The two‐phase samples exhibit an improved microstructural stability compared with pure Sm 2 O 3 . The microstructure before and after various heat treatments has been investigated by high‐resolution transmission electron microscopy, scanning electron microscopy, nitrogen adsorption, and X‐ray diffraction.