Spherical shape BaNd2Ti5O14 powders prepared by spray pyrolysis

Jin Man Han; Dae Soo Jung; Jung Sang Cho; Yun Chan Kang

doi:10.2109/jcersj2.116.1289

Spherical shape BaNd₂Ti₅O₁₄ powders prepared by spray pyrolysis

Jin Man Han, Dae Soo Jung, Jung Sang Cho, Yun Chan Kang

Research output: Contribution to journal › Article › peer-review

Abstract

Spherical shape BaNd₂Ti₅O₁₄ (BNT) powders were prepared by post-treatment of the precursor powders obtained by spray pyrolysis. The mean size and geometric standard deviation of the powders prepared at a low flow rate of the carrier gas as 5 Lmin^-1 were 0.73μm and 1.30. The powders post-treated at a temperature of 1000°C had a single phase of BNT without impurity peaks. The BNT powders had similar compositions to that of the spray solution. Necking between the powders occurred at a sintering temperature of 1100°C. The BNT powders with spherical shape changed to the rod-like crystals after sintering at temperatures above 1200°C. The aspect ratio of the rod-like crystals increased with increasing the sintering temperatures.

Original language	English
Pages (from-to)	1289-1294
Number of pages	6
Journal	Journal of the Ceramic Society of Japan
Volume	116
Issue number	1360
DOIs	https://doi.org/10.2109/jcersj2.116.1289
Publication status	Published - 2008 Dec
Externally published	Yes

Keywords

Dielectric material
Spray pyrolysis
Titanate

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

Access to Document

10.2109/jcersj2.116.1289

Cite this

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title = "Spherical shape BaNd2Ti5O14 powders prepared by spray pyrolysis",

abstract = "Spherical shape BaNd2Ti5O14 (BNT) powders were prepared by post-treatment of the precursor powders obtained by spray pyrolysis. The mean size and geometric standard deviation of the powders prepared at a low flow rate of the carrier gas as 5 Lmin-1 were 0.73μm and 1.30. The powders post-treated at a temperature of 1000°C had a single phase of BNT without impurity peaks. The BNT powders had similar compositions to that of the spray solution. Necking between the powders occurred at a sintering temperature of 1100°C. The BNT powders with spherical shape changed to the rod-like crystals after sintering at temperatures above 1200°C. The aspect ratio of the rod-like crystals increased with increasing the sintering temperatures.",

keywords = "Dielectric material, Spray pyrolysis, Titanate",

author = "Han, {Jin Man} and Jung, {Dae Soo} and Cho, {Jung Sang} and Kang, {Yun Chan}",

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AU - Kang, Yun Chan

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AB - Spherical shape BaNd2Ti5O14 (BNT) powders were prepared by post-treatment of the precursor powders obtained by spray pyrolysis. The mean size and geometric standard deviation of the powders prepared at a low flow rate of the carrier gas as 5 Lmin-1 were 0.73μm and 1.30. The powders post-treated at a temperature of 1000°C had a single phase of BNT without impurity peaks. The BNT powders had similar compositions to that of the spray solution. Necking between the powders occurred at a sintering temperature of 1100°C. The BNT powders with spherical shape changed to the rod-like crystals after sintering at temperatures above 1200°C. The aspect ratio of the rod-like crystals increased with increasing the sintering temperatures.

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