Phase Transition and Dielectric Properties of BaTiO3 Ceramics Containing 10 Mol% BGeO3

Materials Chemistry and Physics 119 (2010) 118–122 (doi:10.1016/j.matchemphys.2009.08.026)

16 Pages Posted: 24 Jul 2018

See all articles by Roberto Köferstein

Roberto Köferstein

Martin Luther Universitat Halle Wittenberg

Lothar Jäger

Martin Luther University of Halle-Wittenberg - Institute of Chemistry, Inorganic Chemistry

Mandy Zenkner

Martin Luther University of Halle-Wittenberg - Institute of Chemistry, Inorganic Chemistry

Stefan Ebbinghaus

Martin Luther University of Halle-Wittenberg - Institute of Chemistry, Inorganic Chemistry

Date Written: July 2, 2010

Abstract

Dielectric properties and the cubic tetragonal phase transition temperature of dense BaTiO3 ceramics containing 10 mol% BaGeO3, sintered between 840 and 1350 °C, have been investigated. The ceramic bodies were prepared from a nano-sized BaTi0.9/Ge0.1O3 powder consisting of both BaTiO3 and BaGeO3 phases. The addition of BaGeO3 leads to a reduction and broadening of the permittivity maximum, and to a small downshift of the paraelectric ferroelectric phase transition temperature, compared to a pure BaTiO3 ceramic. Lower sintering temperatures and thus small grain sizes of the ceramics cause an additional reduction of the maximum permittivity down to 2800. Both DTA and dilatometric measurements reveal also a downshifting of the phase transition temperature, as well as a decrease of the latent heat.

Suggested Citation

Köferstein, Roberto and Jäger, Lothar and Zenkner, Mandy and Ebbinghaus, Stefan, Phase Transition and Dielectric Properties of BaTiO3 Ceramics Containing 10 Mol% BGeO3 (July 2, 2010). Materials Chemistry and Physics 119 (2010) 118–122 (doi:10.1016/j.matchemphys.2009.08.026) , Available at SSRN: https://ssrn.com/abstract=3206729

Roberto Köferstein (Contact Author)

Martin Luther Universitat Halle Wittenberg ( email )

Universitätsplatz 10
Halle (Saale), Saxony-Anhalt 06108
Germany

Lothar Jäger

Martin Luther University of Halle-Wittenberg - Institute of Chemistry, Inorganic Chemistry

Halle (Saale), Saxony-Anhalt 06108
Germany

Mandy Zenkner

Martin Luther University of Halle-Wittenberg - Institute of Chemistry, Inorganic Chemistry

Halle (Saale), Saxony-Anhalt 06108
Germany

Stefan Ebbinghaus

Martin Luther University of Halle-Wittenberg - Institute of Chemistry, Inorganic Chemistry ( email )

Halle (Saale), Saxony-Anhalt 06108
Germany

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