Dielectric Resonator Antennas with Frequency Stability Under Severe Temperature Variations Based on Li2MgTi3O8 Ceramic Matrix Added with Bi2O3

Bezerra, J. W. O.; Oliveira, R. G. M.; Silva, M. A. S.; Maciel, Tarcísio F.; Góes, J.C.; Sombra, A. S. B.

doi:10.1007/s11664-018-6664-0

Cited by 8 publications

(1 citation statement)

References 29 publications

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“…However, the density of 0.8KNN-0.2KSN composite ceramics was not ideal, and many inside defects were observed and it is difficult to sinter composite ceramics with high density. Thus, in this work, sintering aids Bi 2 O 3 , which permittivity is about 18.2, was introduced in order to improve the densities and sintering characteristics of 0.8KNN-0.2KSN composite ceramics [31][32][33][34][35]. The effects of Bi 2 O 3 on the microstructure, electrical and optical properties of 0.8KNN-0.2KSN-yBi 2 O 3 were investigated.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of Bi ₂ O ₃ doped 0.8(K _0.52 Na _0.48 ) NbO ₃ –0.2KSr ₂ Nb ₅ O ₁₅ lead‐free ceramics

Guo

Jia-dong

Cao

et al. 2019

IET Nanodielectrics

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The 0.8(K 0.52 Na 0.48)NbO 3-0.2KSr 2 Nb 5 O 15-yBi 2 O 3 (0.8KNN-0.2KSN-yBi 2 O 3) lead-free ferroelectric composite ceramics were synthesised using rod-like KSr 2 Nb 5 O 15 (KSN) and isometric (K 0.52 Na 0.48)NbO 3 (KNN) particles as raw material. Effects of Bi 2 O 3 doping content on microstructure, electrical, and optical properties were researched. The results indicated that the addition of Bi 2 O 3 helps to densify 0.8KNN-0.2KSN-y Bi 2 O 3 ceramics within limits without changing phase structure and microstructure. The dielectric constant and phase transition dispersion degree increased with the increase of Bi 2 O 3 while the dielectric loss decreased. Besides, the dielectric tunability was maintained in the range of 43.7∼51.8%, and reached its maximum when Bi 2 O 3 content was 1 wt%. In addition, the remnant polarisation P r and coercive field E c decreased with the increase of Bi 2 O 3 , as well as the optical transmittance of 0.8KNN-0.2KSN, but the transmittance of all samples was above 48%.

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Section: Introductionmentioning

confidence: 99%

Microstructure and properties of Bi ₂ O ₃ doped 0.8(K _0.52 Na _0.48 ) NbO ₃ –0.2KSr ₂ Nb ₅ O ₁₅ lead‐free ceramics

Guo

Jia-dong

Cao

et al. 2019

IET Nanodielectrics

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Evaluation of dielectric properties of the barium titanium silicate (Ba2TiSi2O8) for microwave applications

Abreu

Colares

et al. 2021

J Mater Sci: Mater Electron

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Investigation of dielectric properties of a Li4Ti5O12 ceramic matrix for microwave temperature sensing applications

da Silva,

Nobrega,

do Carmo

et al. 2024

J Aust Ceram Soc

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Dielectric Resonator Antennas with Frequency Stability Under Severe Temperature Variations Based on Li2MgTi3O8 Ceramic Matrix Added with Bi2O3

Cited by 8 publications

References 29 publications

Microstructure and properties of Bi ₂ O ₃ doped 0.8(K _0.52 Na _0.48 ) NbO ₃ –0.2KSr ₂ Nb ₅ O ₁₅ lead‐free ceramics

Microstructure and properties of Bi ₂ O ₃ doped 0.8(K _0.52 Na _0.48 ) NbO ₃ –0.2KSr ₂ Nb ₅ O ₁₅ lead‐free ceramics

Evaluation of dielectric properties of the barium titanium silicate (Ba2TiSi2O8) for microwave applications

Investigation of dielectric properties of a Li4Ti5O12 ceramic matrix for microwave temperature sensing applications

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Dielectric Resonator Antennas with Frequency Stability Under Severe Temperature Variations Based on Li2MgTi3O8 Ceramic Matrix Added with Bi2O3

Cited by 8 publications

References 29 publications

Microstructure and properties of Bi 2 O 3 doped 0.8(K 0.52 Na 0.48 ) NbO 3 –0.2KSr 2 Nb 5 O 15 lead‐free ceramics

Microstructure and properties of Bi 2 O 3 doped 0.8(K 0.52 Na 0.48 ) NbO 3 –0.2KSr 2 Nb 5 O 15 lead‐free ceramics

Evaluation of dielectric properties of the barium titanium silicate (Ba2TiSi2O8) for microwave applications

Investigation of dielectric properties of a Li4Ti5O12 ceramic matrix for microwave temperature sensing applications

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Microstructure and properties of Bi ₂ O ₃ doped 0.8(K _0.52 Na _0.48 ) NbO ₃ –0.2KSr ₂ Nb ₅ O ₁₅ lead‐free ceramics

Microstructure and properties of Bi ₂ O ₃ doped 0.8(K _0.52 Na _0.48 ) NbO ₃ –0.2KSr ₂ Nb ₅ O ₁₅ lead‐free ceramics