KxNa1 - xNbO3powder synthesized by molten-salt process

J. T. Zeng; Kin Wing Kwok; H. L.W. Chan

doi:10.1016/j.matlet.2006.04.083

K_xNa_{1 - x}NbO₃powder synthesized by molten-salt process

J. T. Zeng, Kin Wing Kwok, H. L.W. Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

50 Citations (Scopus)

Abstract

KxNa1 - xNbO3ceramic powders have been successfully synthesized in different salts (NaCl, KCl, NaCl-KCl). Our results reveal that KxNa1 - xNbO3powders with single-phase perovskite structure can be formed at a low temperature such as 750 °C. The type of salts has significant effects on the morphology and chemical composition of the powders. As Na+has a higher diffusing rate and occupies the A-site in the perovskite structure more easily as compared to K+, the powder contains only a small amount of K+(x ∼ 0.10) when it is synthesized according to formula K0.5Na0.5NbO3and in a flux containing the same molar content of Na+and K+. By using a NaCl or KCl salt, the K+concentration x can be adjusted to almost 0 and 0.77, respectively.

Original language	English
Pages (from-to)	409-411
Number of pages	3
Journal	Materials Letters
Volume	61
Issue number	2
DOIs	https://doi.org/10.1016/j.matlet.2006.04.083
Publication status	Published - 1 Jan 2007

Keywords

Ferroelectrics
Perovskites
Piezoelectric materials
Powder technology

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

More information

10.1016/j.matlet.2006.04.083

Cite this

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title = "KxNa1 - xNbO3powder synthesized by molten-salt process",

abstract = "KxNa1 - xNbO3ceramic powders have been successfully synthesized in different salts (NaCl, KCl, NaCl-KCl). Our results reveal that KxNa1 - xNbO3powders with single-phase perovskite structure can be formed at a low temperature such as 750 °C. The type of salts has significant effects on the morphology and chemical composition of the powders. As Na+has a higher diffusing rate and occupies the A-site in the perovskite structure more easily as compared to K+, the powder contains only a small amount of K+(x ∼ 0.10) when it is synthesized according to formula K0.5Na0.5NbO3and in a flux containing the same molar content of Na+and K+. By using a NaCl or KCl salt, the K+concentration x can be adjusted to almost 0 and 0.77, respectively.",

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AU - Zeng, J. T.

AU - Kwok, Kin Wing

AU - Chan, H. L.W.

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N2 - KxNa1 - xNbO3ceramic powders have been successfully synthesized in different salts (NaCl, KCl, NaCl-KCl). Our results reveal that KxNa1 - xNbO3powders with single-phase perovskite structure can be formed at a low temperature such as 750 °C. The type of salts has significant effects on the morphology and chemical composition of the powders. As Na+has a higher diffusing rate and occupies the A-site in the perovskite structure more easily as compared to K+, the powder contains only a small amount of K+(x ∼ 0.10) when it is synthesized according to formula K0.5Na0.5NbO3and in a flux containing the same molar content of Na+and K+. By using a NaCl or KCl salt, the K+concentration x can be adjusted to almost 0 and 0.77, respectively.

AB - KxNa1 - xNbO3ceramic powders have been successfully synthesized in different salts (NaCl, KCl, NaCl-KCl). Our results reveal that KxNa1 - xNbO3powders with single-phase perovskite structure can be formed at a low temperature such as 750 °C. The type of salts has significant effects on the morphology and chemical composition of the powders. As Na+has a higher diffusing rate and occupies the A-site in the perovskite structure more easily as compared to K+, the powder contains only a small amount of K+(x ∼ 0.10) when it is synthesized according to formula K0.5Na0.5NbO3and in a flux containing the same molar content of Na+and K+. By using a NaCl or KCl salt, the K+concentration x can be adjusted to almost 0 and 0.77, respectively.

KW - Ferroelectrics

KW - Perovskites

KW - Piezoelectric materials

KW - Powder technology

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