Publication: The study of dielectric diffuseness in the Ba(Mg1/3Nb 2/3)O3-BaTiO3 ceramic system
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Issued Date
2006
Resource Type
File Type
application/pdf
ISSN
9641726
Other identifier(s)
2-s2.0-33748847969
Rights Holder(s)
Scopus
Bibliographic Citation
Smart Materials and Structures. Vol 15, No.5 (2006), p.1255-1259
Suggested Citation
Munpakdee A., Pengpat K., Tontrakoon J., Tunkasiri T. The study of dielectric diffuseness in the Ba(Mg1/3Nb 2/3)O3-BaTiO3 ceramic system. Smart Materials and Structures. Vol 15, No.5 (2006), p.1255-1259. doi:10.1088/0964-1726/15/5/014 Retrieved from: https://hdl.handle.net/20.500.14740/5430
Author(s)
Abstract
The dielectric properties of Ba(Mg1/3Nb2/3)O 3 (BMN)-substituted BaTiO3 (BT) (xBMN-(100-x)BT) ceramics, where x ≤ 0-5mol%, were prepared by a high-temperature solid-state reaction technique. It was found that the substitution of Mg2+ and Nb 5+ at the Ti-site of the BMN-BT ceramics caused compositional inhomogeneity, leading to a diffuse phase transition (DPT). Discontinuous grain growth accompanied with excellent dielectric diffuseness was found in 3-5mol% BMN specimens. The maximum solubility limit of Mg/Nb substitution was assumed to be between 3<x<4mol% BMN. A dielectric study of these compounds as a function of temperature suggested that, for the ceramics with x>2mol%, the maximum dielectric constant decreased and the Curie temperature shifted downwards on the lower temperature side. © 2006 IOP Publishing Ltd.