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A Novel Co-Precipitation Route for the Synthesis of Fine Mixed-Oxide Powders

Published online by Cambridge University Press:  25 February 2011

Amita Pathak  and
P Pramanik
Amita Pathak
Affiliation:
Department of chemistry, Indian Institute of Technology, Kharagpur 721 302, INDIA
P Pramanik
Affiliation:
Department of chemistry, Indian Institute of Technology, Kharagpur 721 302, INDIA
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Abstract

A new co-precipitation technique for the preparation of fine ceramic mixed-oxide povders using a mixture of (NH4)HCO3, triethylamine and formaline in presence of soluble polymers, like polyvinyl alcohol (PVA). The mixture is chemically equivalent to one mole of triethylamnroniumcarbonate (TEAC). The mixed-oxide ccmpositions synthesized and characterized are - MN2O4 [Spinels; where M = Ni(II), Cu(II), Zn(II), Co(II) and N = Fe(III), tr(III)]; M3Fe5O12 [Garnets; where M = Y(III), Gd(III)] and RBa2Cu3O7+δ [Ceramic superconductors; where R = rare-earths]. The final product is characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy for microanalysis (EDX) and scanning electron microscopy (SEM).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 249: Symposium Q – Synthesis and Processing of Ceramics: Scientific Issues , 1991 , 171
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

1. Wang, H.H. et al. , Inorg. Chen., 26, 1474 (1987).Google Scholar
2. Capone, D.W., Hinks, D.G. and Jorgensen, J.D., Zhang, K., Appl. Phys. Lett., 50, 543 (1987).Google Scholar
3. Anderton, D.J. and Sale, F.R., Powder Metal., 1, 14 (1979).CrossRefGoogle Scholar
4. Carcilly, C., Courty, P. and Delmon, B., J. Am. Ceramic Soc., 53, 56 (1970).Google Scholar
5. Bendnorz, J.G., Takashige, M. and Muller, K.A., Europhys. Lett., 3, 379 (1987).Google Scholar
6. Pramanik, P., Biswas, S., Chakravarty, S., Raul, B.K. and Chopra, K.L., Mat. Res. Bull, 25, 877 (1990).Google Scholar