Synthesis of MgNb{sub 2}O{sub 6} by coprecipitation

A simple coprecipitation technique was used successfully to synthesize fine powders of MgNb{sub 2}O{sub 6} (MN) phase. An aqueous mixture of ammonium carbonate and ammonium hydroxide was used to precipitate Mg{sup 2+} and Nb{sup 5+} cations as carbonate and hydroxide respectively under basic conditi...

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Bibliographic Details
Published inMaterials research bulletin Vol. 41; no. 7
Main Authors Navale, S.C., Gaikwad, A.B., Ravi, V.
Format Journal Article
LanguageEnglish
Published United States 13.07.2006
Subjects
AMMONIUM CARBONATES
AMMONIUM HYDROXIDES
CERAMICS
CHEMICAL PREPARATION
COPRECIPITATION
HEATING
LATTICE PARAMETERS
MAGNESIUM IONS
MATERIALS SCIENCE
MORPHOLOGY
NIOBATES
NIOBIUM IONS
PARTICLE SIZE
POWDERS
SCANNING ELECTRON MICROSCOPY
X-RAY DIFFRACTION
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Summary:A simple coprecipitation technique was used successfully to synthesize fine powders of MgNb{sub 2}O{sub 6} (MN) phase. An aqueous mixture of ammonium carbonate and ammonium hydroxide was used to precipitate Mg{sup 2+} and Nb{sup 5+} cations as carbonate and hydroxide respectively under basic conditions. This precipitate on heating at 750 deg. C produced MN powders. For comparison MN powders were prepared by the traditional solid state method. The phase content and the lattice parameters were studied by powder X-ray diffraction (XRD). Particle size and morphology of the particles were studied by scanning electron microscopy (SEM)
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2005.12.009