Development of low cost, high performance Ba(Zn1/3Nb2/3O3) based materials for microwave resonator applications

Scott, Robert Ian; Thomas, Mark A.; Hampson, Chris

doi:10.1016/s0955-2219(03)00134-1

Cited by 79 publications

(46 citation statements)

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“…[1][2][3][4] Many classic microwave dielectric ceramics based on ABO3 perovskite structure have been explored and the relation between structure-property has been extensively studied. 5,6 Recently, many complex oxides with classic ABO4 type, such as scheelite (CaMoO4, BiVO4), 7,8 Fergusonite (LaNbO4, NdNbO4), 9 stibiotantalite (BiNbO4, BiTaO4), 10,11 wolframite (ZnWO4, MgWO4), 12 zircon (CeVO4) 13 and rutile ((Zn,Nb)TiO4, (Cu,Nb)TiO4) 14 lattice. In the present work, a comprehensive study on the phase assemblage and evolution in (Bi,Y)VO4 system was performed with the zircon-type solid solution region and its associated sintering behavior, microstructure and microwave dielectric properties were studied in detail.…”

Section: Introductionmentioning

confidence: 99%

Novel temperature stable high-ε_rmicrowave dielectrics in the Bi₂O₃–TiO₂–V₂O₅system

et al. 2016

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eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. respectively. Raman spectra, Shannon's additive rule, a classical oscillator model and far-infrared spectra were employed to study structure/property relations in detail. All evidence supported the premise that Bi-based vibrations dominate the dielectric permittivity in the microwave region.3

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Section: Introductionmentioning

confidence: 99%

Novel temperature stable high-ε_rmicrowave dielectrics in the Bi₂O₃–TiO₂–V₂O₅system

et al. 2016

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“…As a consequence, a considerable amount of research is nowadays focused on the search for alternative ceramic materials providing comparable dielectric proprieties at lower costs. Applications as dielectric resonators require materials with a high quality factor at the resonance frequency (Q f ), a high dielectric constant (ε r ) and a near-zero temperature coefficient of the resonance frequency (τ f ) [2,5]. In this context, Ba(Co 0.7 Zn 0.3 ) 1/3 Nb 2/3 O 3 (BCZN) ranks among the best oxide materials with regard to applications such as dielectric resonators in the range of microwave frequencies due to its high Q f value (~56,000-85,000 GHz), its high ε r (~34.5) and its small τ f (~0) [6,7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Post-Annealing on the Microstructure and Microwave Dielectric Properties of Ba(Co0.7Zn0.3)1/3Nb2/3O3 Ceramics

Itaalit¹,

Mouyane²,

Bernard³

et al. 2015

Applied Sciences

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Abstract:The effects of post-annealing on the crystal structure, microstructure, and microwave dielectric properties for Ba(Co 0.7 Zn 0.3 ) 1/3 Nb 2/3 O 3 ceramics were investigated. The as-prepared materials were characterized by X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. The microwave dielectric properties are measured at 6 GHz using a network analyzer. Ba 5 Nb 4 O 15 and/or Ba 8 (Co,Zn) 1 Nb 6 O 24 secondary phases were found on the surface according to sintering conditions due to volatilization of some Zn and Co elements. The experimental results show that the beneficial effect of the annealing steps to improved the microwave dielectric properties. Excellent microwave dielectric properties were achieved for the coarse-grained microstructures by a higher sintering temperature and with a shorter holding time followed by annealing steps at lower temperatures with a longer holding time. This improvement can be attributed to 1:2 cation ordering within the crystal, which is taking place during annealing process. The Ba(Co 0.7 Zn 0.3 ) 1/3 Nb 2/3 O 3 ceramic could be used successfully for realization of dielectric microwave resonators, since it has a high quality factor Q f value of 123,700 GHz, a high dielectric constant ε r value of 34.5 and a temperature coefficient of the resonant frequency τ f of 0 ppm/ ¥ C.

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“…We have shown for the first time that Ba(Mg1/3Nb2/3)O3 -based materials can have in some cases an extremely high Q (Q × f ≈ 150000) [123]. New papers appeared [5,124,125], which show the creation of high-Q MW dielectrics based on niobium-containing perovskites to be worth-while.…”

Section: Ba(m 2+mentioning

confidence: 99%

Microwave Dielectrics Based on Complex Oxide Systems

Белоус¹

2012

Dielectric Material

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Development of low cost, high performance Ba(Zn1/3Nb2/3O3) based materials for microwave resonator applications

Cited by 79 publications

References 6 publications

Novel temperature stable high-ε_rmicrowave dielectrics in the Bi₂O₃–TiO₂–V₂O₅system

Novel temperature stable high-ε_rmicrowave dielectrics in the Bi₂O₃–TiO₂–V₂O₅system

Effect of Post-Annealing on the Microstructure and Microwave Dielectric Properties of Ba(Co0.7Zn0.3)1/3Nb2/3O3 Ceramics

Microwave Dielectrics Based on Complex Oxide Systems

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Development of low cost, high performance Ba(Zn1/3Nb2/3O3) based materials for microwave resonator applications

Cited by 79 publications

References 6 publications

Novel temperature stable high-εrmicrowave dielectrics in the Bi2O3–TiO2–V2O5system

Novel temperature stable high-εrmicrowave dielectrics in the Bi2O3–TiO2–V2O5system

Effect of Post-Annealing on the Microstructure and Microwave Dielectric Properties of Ba(Co0.7Zn0.3)1/3Nb2/3O3 Ceramics

Microwave Dielectrics Based on Complex Oxide Systems

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Novel temperature stable high-ε_rmicrowave dielectrics in the Bi₂O₃–TiO₂–V₂O₅system

Novel temperature stable high-ε_rmicrowave dielectrics in the Bi₂O₃–TiO₂–V₂O₅system