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Effect of Concentration and Temperature on the Surface Morphology of Gd 2 O 3 Nanocrystallites in Silica
Author(s) -
Ahlawat Rachna
Publication year - 2014
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12343
Subject(s) - materials science , morphology (biology) , gadolinium , microstructure , analytical chemistry (journal) , fourier transform infrared spectroscopy , ceramic , annealing (glass) , phase (matter) , diffraction , oxide , nuclear chemistry , chemical engineering , metallurgy , chromatography , chemistry , optics , biology , genetics , physics , organic chemistry , engineering
Gd( NO 3 ) 3 .6H 2 O and TEOS were used as precursors and obtained Gd 2 O 3 :SiO 2 ceramic powder having different concentration of Gd 2 O 3 as 2.2, 2.8, 3.4, and 4.0 wt % using solgel process. The powdered samples were annealed at 500°C and 900°C temperatures and characterized by XRD , FTIR , SEM , and TEM . In X‐ray diffraction, cubic phase of Gadolinium oxide is reported only for the annealed samples having higher concentration (3.4 & 4.0 wt %) of Gd 2 O 3 . SEM and TEM results further confirm that the surface morphology of the microstructures depend on the temperature and concentration.