Influence of sulphate on synthesis of Nd:Y2O3 powders via coprecipitation route and fabrication of transparent ceramics. (February 2013)

• Record Type: Journal Article
• Authors: Huang, Z.; Guo, W.; Fei, B. J.; Li, J. T.; Cao, Y. G.
• Is Part Of: Materials research innovations. Volume 17:Number 2(2013)
• Page Start: 73
• Page End: 79
• Publication Date: 2013-02
• Subjects: Chemical synthesis, -- Ceramics, -- Optical materials; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1433075X12Y.0000000022
• Languages: English
• ISSNs: 1432-8917

Abstract

Abstract : Neodymium doped yttrium carbonate precursors were synthesised via a normal strike coprecipitation route, employing NH4 HCO3 as precipitant and (NH4 )2 SO4 as surfactant. Nd:Y2 O3 powders were obtained through calcining the precursors at 1100°C for 3 h. The precursors, Nd:Y2 O3 powders and ceramics samples were characterised by means of several analytic techniques, such as differential thermal and thermogravimetric analysis, Fourier transform infrared, X-ray powder diffraction, TEM and SEM. The as synthesised precursors were amorphous, which gradually changed from agglomeration to needle-like shape along with the increase in (NH4 )2 SO4 . The Nd:Y2 O3 powders derived from needle shaped precursors exhibited good dispersion with mean particle sizes at ∼50 nm. The well dispersed Nd:Y2 O3 powders also showed good sinterability, and the corresponding sintered ceramics samples were highly transparent.