TY - JOUR
T1 - Dielectric BaTiO3-BBSZ glass ceramic composition with ultra-low sintering temperature
AU - Chen, Mei Yu
AU - Juuti, Jari
AU - Hsi, Chi Shiung
AU - Chia, Chi-Ta
AU - Jantunen, Heli
N1 - Funding Information:
The work leading to these results has received funding from the European Research Council (ERC) under the European Union's Seventh Framework Programme ( FP7/2007-2013 )/ ERC Grant agreement No. 291132 . The authors acknowledge Timo Vahera for assistance with the use of the impedance analyzer, and the Center of Microscopy and Nanotechnology (CMNT) at the University of Oulu for preparing the electrodes and for the use of the Raman spectrometer.
Publisher Copyright:
© 2014 Elsevier Ltd.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Composites made from BaTiO3 with a high addition of B2O3-Bi2O3-SiO2-ZnO (BBSZ) glass (50-90wt.%) were sintered at 450°C and 400°C. The shrinkage rates of the compositions as a function of temperature were determined by dilatometer. XRD patterns, Raman spectra and microstructures revealed that an additional phase of Bi24Si2O40 was formed when samples were sintered at 450°C and the glass content exceeded 60wt.%. Composites with an addition of 70wt.% of BBSZ had e{open}r=132 and 207 and tanδ=0.0056 and 0.028 at 100kHz and 100MHz, respectively. Notably, at 100MHz, the additional Bi24Si2O40 phase may be the reason that losses of 80-90wt.% samples were lower than those of BaTiO3 and BBSZ glass. Realized composites with 70-90wt.% of BBSZ glass sintered at 450°C exhibited a dense structure, high permittivity and acceptable losses. This makes them suitable for various dielectric applications with ultra-low sintering temperature.
AB - Composites made from BaTiO3 with a high addition of B2O3-Bi2O3-SiO2-ZnO (BBSZ) glass (50-90wt.%) were sintered at 450°C and 400°C. The shrinkage rates of the compositions as a function of temperature were determined by dilatometer. XRD patterns, Raman spectra and microstructures revealed that an additional phase of Bi24Si2O40 was formed when samples were sintered at 450°C and the glass content exceeded 60wt.%. Composites with an addition of 70wt.% of BBSZ had e{open}r=132 and 207 and tanδ=0.0056 and 0.028 at 100kHz and 100MHz, respectively. Notably, at 100MHz, the additional Bi24Si2O40 phase may be the reason that losses of 80-90wt.% samples were lower than those of BaTiO3 and BBSZ glass. Realized composites with 70-90wt.% of BBSZ glass sintered at 450°C exhibited a dense structure, high permittivity and acceptable losses. This makes them suitable for various dielectric applications with ultra-low sintering temperature.
KW - BaTiO
KW - Dielectric properties
KW - Glass ceramics
KW - Ultra-low sintering temperature
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U2 - 10.1016/j.jeurceramsoc.2014.08.015
DO - 10.1016/j.jeurceramsoc.2014.08.015
M3 - Article
AN - SCOPUS:84908062081
VL - 35
SP - 139
EP - 144
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 1
ER -