The Formation Mechanism for Dendritic Phase(s) in Batio₃ Ceramcs

Author

X. Xu
Greg Hilmas, Missouri University of Science and TechnologyFollow

Abstract

The formation mechanism for a dendritic phase in BaTiO₃ ceramics was investigated. Results show that the needle-like Ba₆Ti₁₇O₄₀ only appeared at sintering temperatures above the eutectic point in TiO₂ excess BaTiO₃. The dendritic phases in BaTiO₃ only occur with the presence of both Nb ⁵⁺ dopant and an excess of TiO₂. The composition of the dendritic phase is close to Ba₆Ti₁₄O₄₀ and Ba₆Ti₁₄Nb₂O₃₉ based on EDS analysis. Both the Ba₆Ti₁₇O₄₀ and the Ba₆Ti₁₄Nb₂O₃₉ phases are linear dielectrics with low dielectric constants of 59 and 57, respectively.

Recommended Citation

X. Xu and G. Hilmas, "The Formation Mechanism for Dendritic Phase(s) in Batio₃ Ceramcs," Proceedings of the 27th International Cocoa Beach Conference on Advanced Ceramics and Composites: B (200, Cocoa Beach, FL), vol. 24, no. 4, pp. 27 - 33, Wiley-Blackwell, Jan 2003.

The definitive version is available at https://doi.org/10.1002/9780470294826.ch5

Meeting Name

27th International Cocoa Beach Conference on Advanced Ceramics and Composites: B (2003: Jan. 26-31, Cocoa Beach, FL)

Department(s)

Materials Science and Engineering

Keywords and Phrases

Dopants; Barium compounds; Composition; Dendrimers; Doping (additives); Energy dispersive spectroscopy; Eutectics; Permittivity; Sintering; Ceramic materials

International Standard Serial Number (ISSN)

0196-6219

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2003 Wiley-Blackwell, All rights reserved.

Publication Date

01 Jan 2003