A co-precipitation technique to prepare BiNbO{sub 4}, MgTiO{sub 3} and Mg{sub 4}Ta{sub 2}O{sub 9} powders

Journal Article · Thu Feb 02 00:00:00 EST 2006 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2005.08.010· OSTI ID:20891625

Gaikwad, A B ^[1]; Navale, S C ^[2]; Samuel, V ^[3]; Murugan, A V ^[4]; Ravi, V ^[2]

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1. Center for Materials Characterization, National Chemical Laboratory, Pune 411008 (India)
2. Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411008 (India)
3. Catalysis Division, National Chemical Laboratory, Pune 411008 (India)
4. Centre for Materials for Electronics Technology (C-MET), Department of Information Technology, Government of India, Dr. Homibhabha Road, Panchawati, Pune 411008 (India)

A simple co-precipitation technique has been used successfully for the preparation of pure, ultrafine, single phase BiNbO{sub 4} (BN), MgTiO{sub 3} and Mg{sub 4}Ta{sub 2}O{sub 9}. An aqueous sodium hydroxide or ammonium hydroxide and ammonium carbonate solution was used to precipitate these cations as hydroxides and carbonates simultaneously under basic conditions. These precursors on heating at 750 deg. C, produce the respective powders. For comparison, these compounds were also prepared by the traditional solid state method. The phase purity and lattice parameters were studied by powder X-ray diffraction (XRD). Particle size and morphology was studied by transmission electron spectroscopy (TEM)

• OSTI ID: 20891625
• Journal Information: Materials Research Bulletin, Vol. 41, Issue 2; Other Information: DOI: 10.1016/j.materresbull.2005.08.010; PII: S0025-5408(05)00314-4; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMMONIUM CARBONATES
AMMONIUM HYDROXIDES
BORON NITRIDES
CERAMICS
CHEMICAL PREPARATION
COPRECIPITATION
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
HEATING
IMPURITIES
LATTICE PARAMETERS
MORPHOLOGY
PARTICLE SIZE
SODIUM HYDROXIDES
X-RAY DIFFRACTION