Effect of Co2O3-doped on dielectric properties of tungsten-bronze structure ceramic Ba4Eu2Fe2Nb8O3030

Author

Peng, X.Y. ; Fang, L. ; Li, C.C. ; Hu, C.Z. ; Wu, B.L.

Author_Institution

State Key Lab. of Adv. Technol. for Mater. Synthesis & Process., Wuhan Univ. of Technol., Wuhan, China

fYear

2009

fDate

23-27 Aug. 2009

Firstpage

1

Lastpage

4

Abstract

In present work, undoped and Co₂O₃-doped Ba₄Eu₂Fe₂Nb₈O₃₀ ceramics were fabricated by routine solid state method. Wide temperature range measurement shows two kinds of dielectric peaks. The low-temperature peak attributes to ferroelectric-paraelectric phase transition. The high-temperature peak is affected greatly by Co₂O₃ additives. With increasing the content of Co₂O₃ dopant the second peak vanished, indicating that it is related to space charge.

Keywords

barium compounds; ceramics; cobalt compounds; doping profiles; europium compounds; ferroelectric transitions; iron compounds; permittivity; sintering; space charge; Ba₄Eu₂Fe₂Nb₈O₃₀; Ba₄Eu₂Fe₂Nb₈O₃₀:Co₂O₃; dielectric constant; dielectric properties; doping; ferroelectric-paraelectric phase transition; sintering; solid state method; space charge; tungsten-bronze structure ceramic fabrication; Ceramics; Dielectric materials; Dielectric measurements; Educational technology; Ferroelectric materials; Laboratories; Niobium compounds; Permittivity; Temperature distribution; Temperature measurement; Tungsten bronze; dielectric properties; phase transition; x-ray diffraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the

Conference_Location

Xian

ISSN

1099-4734

Print_ISBN

978-1-4244-4970-5

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2009.5307599

Filename

5307599