A coprecipitation technique to prepare BaNb2O6

N. Natarajan; Violet Samuel; Renu Pasricha; V. Ravi

doi:10.1016/j.mseb.2004.11.009

A coprecipitation technique to prepare BaNb₂O₆

N. Natarajan, Violet Samuel, Renu Pasricha, V. Ravi

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Abstract

A mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and niobium ions as barium oxalate and niobium hydroxide under basic conditions. This precursor on calcination at 750°C yielded BaNb₂O₆ ceramics. This is a much lower temperature as compared to that prepared by traditional solid-state method (1000°C), as reported for the formation of BaNb₂O₆. Transmission electron microscope (TEM) investigations revealed that the average particle size is 100 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1100. The ferroelectric hysteresis loop parameters of these samples were also studied.

Original language	English (US)
Pages (from-to)	169-171
Number of pages	3
Journal	Materials Science and Engineering: B
Volume	117
Issue number	2
DOIs	https://doi.org/10.1016/j.mseb.2004.11.009
State	Published - Mar 15 2005

Keywords

Ammonia
Ceramics
Electron microscopy
Niobium oxide
Oxides

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.mseb.2004.11.009

Cite this

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title = "A coprecipitation technique to prepare BaNb2O6",

abstract = "A mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and niobium ions as barium oxalate and niobium hydroxide under basic conditions. This precursor on calcination at 750°C yielded BaNb2O6 ceramics. This is a much lower temperature as compared to that prepared by traditional solid-state method (1000°C), as reported for the formation of BaNb2O6. Transmission electron microscope (TEM) investigations revealed that the average particle size is 100 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1100. The ferroelectric hysteresis loop parameters of these samples were also studied.",

keywords = "Ammonia, Ceramics, Electron microscopy, Niobium oxide, Oxides",

author = "N. Natarajan and Violet Samuel and Renu Pasricha and V. Ravi",

note = "Funding Information: One of the authors (V.R) acknowledges the Department of Science and Technology (DST), India, grant no. SP/S1/H-19/2000 for financial assistance. ",

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AU - Natarajan, N.

AU - Samuel, Violet

AU - Pasricha, Renu

AU - Ravi, V.

N1 - Funding Information: One of the authors (V.R) acknowledges the Department of Science and Technology (DST), India, grant no. SP/S1/H-19/2000 for financial assistance.

PY - 2005/3/15

Y1 - 2005/3/15

N2 - A mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and niobium ions as barium oxalate and niobium hydroxide under basic conditions. This precursor on calcination at 750°C yielded BaNb2O6 ceramics. This is a much lower temperature as compared to that prepared by traditional solid-state method (1000°C), as reported for the formation of BaNb2O6. Transmission electron microscope (TEM) investigations revealed that the average particle size is 100 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1100. The ferroelectric hysteresis loop parameters of these samples were also studied.

AB - A mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and niobium ions as barium oxalate and niobium hydroxide under basic conditions. This precursor on calcination at 750°C yielded BaNb2O6 ceramics. This is a much lower temperature as compared to that prepared by traditional solid-state method (1000°C), as reported for the formation of BaNb2O6. Transmission electron microscope (TEM) investigations revealed that the average particle size is 100 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1100. The ferroelectric hysteresis loop parameters of these samples were also studied.

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KW - Electron microscopy

KW - Niobium oxide

KW - Oxides

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