Sintering of titanate based dielectrics doped with lithium fluoride and calcium borosilicate glass

Hsi, Chi‐Shiung; Chen, Mei Yu; Jantunen, Heli; Hsu, Fang‐Chi; Lin, Tzu‐Chin

doi:10.2478/s13536-011-0006-8

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…George et al [2] reported that the sintering temperature of Li2CaSiO4 ceramics can be decreased from 1000 o C to 850 o C by the addition of different types of glasses, such as PbO-B2O3-SiO2, BaO-B2O3-SiO2, ZnO-B2O3-SiO2, Li2O-B2O3-SiO2 and B2O3-Bi2O3-SiO2-ZnO. Hsi et al [3][4] also found CaO-B2O3-SiO2 glass beneficial to decrease the sintering temperature of BaTiO3. Among these low melting temperature glasses, lead-free B2O3-Bi2O3-SiO2-ZnO (BBSZ) glass is used with various dielectric materials making them feasible for LTCC applications [5][6].…”

Section: Introductionmentioning

confidence: 99%

“…The addition of glass into dielectric ceramics is one of the most efficient and widely used methods of fabricating Low Temperature Co-fired Ceramics (LTCCs). It has been found that dielectric materials with an optimized amount of glass enable low sintering temperatures with feasible dielectric properties [1][2][3][4]. George et al [2] reported that the sintering temperature of Li2CaSiO4 ceramics can be decreased from 1000 o C to 850 o C by the addition of different types of glasses, such as PbO-B2O3-SiO2, BaO-B2O3-SiO2, ZnO-B2O3-SiO2, Li2O-B2O3-SiO2 and B2O3-Bi2O3-SiO2-ZnO.…”

Section: Introductionmentioning

confidence: 99%

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Sintering behavior, microstructure and dielectric performance of BaTiO3 with 60–65 wt% addition of B2O3-Bi2O3-SiO2-ZnO glass

Chen

Juuti

Jantunen

2018

Journal of Alloys and Compounds

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The sintering behaviors and characteristics of a glass-ceramic composite (BaTiO3 with 60-65 wt.% addition of BBSZ) were studied in this paper. The composites showed three-stage phase generation, Bi24Si2O40 at 385-450 o C, an intermediate borate phase and Bi4Ti3O12 at 530 o C, ZnO and BaBi4Ti4O15 at 720 o C. High densification was achieved at a sintering temperature of 720 o C for the composite with BaTiO3 and 60 wt.% of glass, and at 480 o C with 65 wt.% glass addition. The amounts of the phases for different samples were also studied. High permittivity with a relatively low loss value (εr ~ 116 and tan δ ~ 0.007 at 100 kHz) was achieved when the sample having 65 wt.% addition of glass was sintered at 480 o C. This sample was also feasible for co-firing with silver electrodes. With a somewhat lower glass addition (60 wt.%), sintering at 720 o C generated BaBi4Ti4O15 phase showing weak ferroelectricity (remanence polarization Pr of 0.17 µC/cm 2 and a coercive field Ec of 0.85 MV/m with an applied field of 8 MV/m) which also resulted in a higher loss (0.016).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sintering behavior, microstructure and dielectric performance of BaTiO3 with 60–65 wt% addition of B2O3-Bi2O3-SiO2-ZnO glass

Chen

Juuti

Jantunen

2018

Journal of Alloys and Compounds

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“…B2O3-Bi2O3-SiO2-ZnO (BBSZ) glass, used in many LTCCs, has a low transition temperature [5][6] . In LTCC technology also several other methods to decrease the sintering temperature has been used, such as enlarging surface area of particles, glass coating, and addition of fluoride [7][8] . Hsi et al reported that calcium borosilicate glass coated BaTiO3 enabled efficient decrease of sintering temperature from 1450 °C to 850 °C 7 .…”

Section: Introductionmentioning

confidence: 99%

Sintering behavior and characteristics study of BaTiO3 with 50 wt% of B2O3-Bi2O3-SiO2-ZnO glass

Chen

Juuti

Hsi

et al. 2017

Journal of the European Ceramic Society

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The thermal analysis of B2O3-Bi2O3-SiO2-ZnO (BBSZ) glass with different particle sizes and LiF addition was researched to study its temperature behavior. Next the composites with 50 wt.% BaTiO3-50 wt.% BBSZ glass were prepared for shrinkage, microstructures and dielectric properties investigations. The differently treated BBSZ glass showed that the smaller glass particles clearly decreased its softening and crystallization temperatures. LiF addition had the same but much weaker effect. The composites showed two-stage shrinkage related to the softening of the glass and new phase generation of Bi24Si2O40 at 385-450 °C, and Bi4BaTi4O15 over 680 °C. The microstructures of the composites sintered at 720 °C showed Bi4BaTi4O15, BaTiO3 and Bi24Si2O40 with residual ZnO phase. LiF addition increased the amount of Bi4BaTi4O15, thus increasing the loss value. However the particle size of the glass did not effect to the dielectric properties of the composites showing permittivity of 248-256 and loss of 0.013 at 100 kHz.

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Influence of microstructure on dielectric properties of Nd-doped barium titanate synthesized by hydrothermal method

Zhang

Cao

et al. 2012

J Mater Sci: Mater Electron

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Sintering of titanate based dielectrics doped with lithium fluoride and calcium borosilicate glass

Cited by 3 publications

References 9 publications

Sintering behavior, microstructure and dielectric performance of BaTiO3 with 60–65 wt% addition of B2O3-Bi2O3-SiO2-ZnO glass

Sintering behavior, microstructure and dielectric performance of BaTiO3 with 60–65 wt% addition of B2O3-Bi2O3-SiO2-ZnO glass

Sintering behavior and characteristics study of BaTiO3 with 50 wt% of B2O3-Bi2O3-SiO2-ZnO glass

Influence of microstructure on dielectric properties of Nd-doped barium titanate synthesized by hydrothermal method

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