Fabrication and dielectric properties of barium titanate-based glass ceramics for tunable microwave LTCC application

The crystallization and dielectric properties of SrO–BaO–Nb2O5–GeO2 glass–ceramics were investigated. One- and two-stage heat-treatment methods were used to convert the parent glass to glass–ceramics. Strontium barium niobate (SBN) with a tetragonal tungsten-bronze structure formed as the major crystalline phase. When the crystallizing temperature/time was increased, the secondary crystalline BaGe2O5 phase coexisted with SBN. BaGe2O5 formed as a surface layer grown from the surface into the interior of the sample. The dendritic morphology of SBN crystals was examined. The glass–ceramics crystallized by two-stage heat treatment have higher dielectric constants than those crystallized by one-stage heat treatment. The highest dielectric constant that was obtained in the present glass–ceramics was 320. The glass–ceramics showed relaxor-type dielectric behavior.

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Microstructure and dielectric properties of Ti0.995(In0.5Nb0.5)0.005O2/SrO-B2O3-SiO2 glass-ceramics for energy storage

IEEE Transactions on Dielectrics and Electrical Insulation ◽

10.1109/tdei.2017.005997 ◽

2017 ◽

Vol 24 (2) ◽

pp. 712-719 ◽

Cited By ~ 12

Author(s):

Qibin Yuan ◽

Yifei Wang ◽

Hong Wang

Keyword(s):

Energy Storage ◽

Dielectric Properties ◽

Glass Ceramics ◽

Sio2 Glass

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Crystallization Behavior and Dielectric Properties of a New High Dielectric Constant Low-Temperature Cofired Ceramics Material Based on Nd2O3-TiO2-SiO2 Glass-Ceramics

Journal of the American Ceramic Society ◽

10.1111/j.1551-2916.2010.03655.x ◽

2010 ◽

pp. no-no

Author(s):

Hsing-I. Hsiang ◽

Li-Then Mei ◽

Wen-Chang Liao ◽

Fu-Su Yen

Keyword(s):

Dielectric Constant ◽

Dielectric Properties ◽

Low Temperature ◽

Crystallization Behavior ◽

High Dielectric Constant ◽

Glass Ceramics ◽

Sio2 Glass ◽

Cofired Ceramics ◽

High Dielectric

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Densification, flexural strength and dielectric properties of CaO-MgO-ZnO-SiO2/Al2O3 glass ceramics for LTCC applications

Ceramics International ◽

10.1016/j.ceramint.2021.07.051 ◽

2021 ◽

Author(s):

Liutong Xiang ◽

Chaowei Zhong ◽

Tianyin Qin ◽

Mingxia Wang ◽

Dongshuo Liu ◽

...

Keyword(s):

Dielectric Properties ◽

Flexural Strength ◽

Glass Ceramics

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Preparation of barium titanate ceramics from amorphous fine particles of the Ba–Ti–O system and its dielectric properties

Journal of Materials Research ◽

10.1557/jmr.1995.0306 ◽

1995 ◽

Vol 10 (2) ◽

pp. 306-311 ◽

Cited By ~ 13

Author(s):

S. Wada ◽

T. Suzuki ◽

T. Noma

Keyword(s):

Dielectric Properties ◽

Barium Titanate ◽

Curie Temperature ◽

Decomposition Method ◽

Fine Particles ◽

Nitrate Solution ◽

Pressing Method ◽

Calcination Temperatures ◽

Grain Sizes ◽

Titanate Ceramics

Using titanium nitrate solution stabilized by chelation, amorphous fine particles of the Ba-Ti-O system were prepared by the mist decomposition method in air. After calcination of these particles, barium titanate ceramics were prepared using the hot uniaxial pressing method, and various properties were investigated. As a result, the grain sizes could be controlled over the range from 58 nm to 187 nm by the sintering temperatures and/or the calcination temperatures, keeping the density almost constant. Moreover, the dielectric properties of the samples showed that the relative permittivity decreased with decreasing grain size, and Curie temperature also shifted to lower temperatures in the same way. In this study, we first found that Curie temperature existed in the barium titanate ceramics with grain sizes from 58 to 147 nm.

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