High-performance ZnTiNb2O8 microwave dielectric ceramics produced from ZnNb2O6–TiO2 nano powders

Bafrooei, Hadi Barzegar; Feizpour, Mahdi; Sayyadi-Shahraki, Ahmad; Song, Kai

doi:10.1016/j.jallcom.2020.155082

Cited by 19 publications

(5 citation statements)

References 56 publications

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“…The inherent loss is mainly related to the structure and the type of the crystals. The external loss is related to the densification, secondary phase, grain size, and porosity [23]. Therefore, the change of quality factor can be attributed to the sintering temperature and the doping of the LMZBS glass, and both of them leading to changes in the ceramic density, the appearance of impure phases and the changes in grain size.…”

Section: Resultsmentioning

confidence: 99%

Influence of Li2O–MgO–ZnO–B2O3–SiO2 glass doping on the microwave dielectric properties and sintering temperature of Li3Mg2NbO6 ceramics

Zhou

Ning

Zhang

et al. 2020

J Mater Sci: Mater Electron

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Li 3 Mg 2 NbO 6 + x wt% Li 2 O-MgO-ZnO-B 2 O 3-SiO 2 (LMZBS, x = 2, 4, 6, 8, 10) microwave dielectric ceramics with the rocksalt structure were primarily investigated by the traditional solid-state method. The microstructures, microwave dielectric properties, and sintering characteristics were studied systematically according to the doping concentration and sintering temperature. It could be seen that the LMZBS glass effectively lower the sintering temperature of Li 3 Mg 2 NbO 6 ceramics from 1250 to 925 °C with microwave dielectric properties changing as a function of the amounts of the LMZBS glass. The experimental results showed that 4 wt% LMZBS glass enabled Li 3 Mg 2 NbO 6 ceramics sintered at 925 °C for 4 h to have excellent microwave dielectric properties: ε r = 16.02, Q × f = 56,455 GHz, τ f = − 18.81 ppm/°C. Therefore, Li 3 Mg 2 NbO 6 ceramics doped with LMZBS glass meet the requirements of low-temperature co-fired ceramics.

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Section: Resultsmentioning

confidence: 99%

Influence of Li2O–MgO–ZnO–B2O3–SiO2 glass doping on the microwave dielectric properties and sintering temperature of Li3Mg2NbO6 ceramics

Zhou

Ning

Zhang

et al. 2020

J Mater Sci: Mater Electron

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“…Pure ixiolite ZnTiNb 2 O 8 ceramics with a relative density of up to 97% were obtained after sintering in the 975−1050°C range. The optimal dielectric properties were: ԑ r = 35.5, Qxf = 52 500 GHz (at 6.7 GHz), and τ f = −60.8 ppm/°C 66 …”

Section: Ceramic Compositions For 5g Devicesmentioning

confidence: 99%

“…Pure ixiolite ZnTiNb 2 O 8 ceramics with a relative density of up to 97% were obtained after sintering in the 975−1050 • C range. The optimal dielectric properties were: ԑ r = 35.5, Qxf = 52 500 GHz (at 6.7 GHz), and τ f = −60.8 ppm/ • C 66. The structural evolution with x was thoroughly investigated, and a temperature-stable ceramic, that is, with a small variation of the dielectric properties with the temperature, was obtained for x = 0.516: ε r ∼ 46.11, Qxf ∼ 27 031 GHz, and τ f ∼ −1.51 ppm/ • C 67.…”

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confidence: 99%

Ceramic compositions for 5G devices containing niobium: A survey

Muccillo,

Muccillo

2024

Int J Ceramic Engine & Sci

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The main dielectric properties of several ceramic materials having niobium in their composition, proposed to take part in 5G telecommunication devices, are reviewed. A preliminary basic presentation of 5G systems, the requirements for implementing their use, a concise review of the ceramic compositions containing niobium that have been studied thus far, and an evaluation of their performance are detailed. A survey is presented, including more than 80 different compositions containing niobium, focusing on key parameters, such as dielectric constant, quality factor, temperature coefficient, and sintering temperature. These parameters play a role for assessing the potential application of these ceramics in 5G devices.

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“…Fan et al [16] [18]. Sintering additives [19][20][21][22][23][24][25][26][27][28][29], ultrafine powders [30][31][32][33][34], and low-sintering-temperature materials [35][36][37] can be used to reduce the sintering temperature of ceramics. However, the preparation of ultrafine powder with low intrinsic sintering temperatures is expensive, complex, and difficult to expand for commercialisation.…”

Section: Introduction mentioning

confidence: 99%

Sintering behaviour and microwave dielectric properties of MgO-2B2O3-xwt%BaCu(B2O5)-ywt%H3BO3 ceramics

Wang

et al. 2021

J Adv Ceram

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This study investigates the bulk density, sintering behaviour, and microwave dielectric properties of the MgO-2B2O3 series ceramics synthesised by solid-state reaction. According to the X-ray diffraction and microstructural analyses, the as-prepared MgO-2B2O3 ceramics possess a single-phase structure with a rod-like morphology. The effects of different quantities of H3BO3 and BaCu(B2O5) (BCB) on the bulk density, sintering behaviour, and microwave dielectric properties of the MgO-2B2O3 ceramics were investigated. Accordingly, the optimal sintering temperature was obtained by adding 30 wt% H3BO3 and 8 wt% BCB. We also reduced the sintering temperature to 825 °C. Furthermore, the addition of 40 wt% H3BO3 and 4 wt% BCB increased the quality factor, permittivity, and temperature coefficient of resonance frequency of MgO-2B2O3 to 44,306 GHz (at 15 GHz), 5.1, and −32 ppm/°C, respectively. These properties make MgO-2B2O3 a viable low-temperature co-fired ceramic with broad applications in microwave dielectrics.

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High-performance ZnTiNb2O8 microwave dielectric ceramics produced from ZnNb2O6–TiO2 nano powders

Cited by 19 publications

References 56 publications

Influence of Li2O–MgO–ZnO–B2O3–SiO2 glass doping on the microwave dielectric properties and sintering temperature of Li3Mg2NbO6 ceramics

Influence of Li2O–MgO–ZnO–B2O3–SiO2 glass doping on the microwave dielectric properties and sintering temperature of Li3Mg2NbO6 ceramics

Ceramic compositions for 5G devices containing niobium: A survey

Sintering behaviour and microwave dielectric properties of MgO-2B2O3-xwt%BaCu(B2O5)-ywt%H3BO3 ceramics

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