Low temperature sintering and microwave dielectric properties of 7NiNb2O6–9TiO2 ceramics with CuO addition

Gong, Shuping; Li, Lianhua; Guo, Mei; Dou, Gang; Chen, Binbin; Zhou, Dongxiang

doi:10.1007/s10854-011-0597-1

Cited by 6 publications

References 11 publications

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List of Low‐Loss Ceramic Dielectric Materials and Their Properties

2017

Microwave Materials and Applications 2V Set

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AbbreviationsST = sintering temperature ( • C) r = relative permittivity , f = measurement frequency (GHz) f = coefficient of temperature variation of resonant frequency (ppm/ • C) No. = serial number Qf = quality factor frequency product (GHz)The table lists the key property data of microwave dielectric materials available from published materials. These data are the relative permittivity ( r ), the product of the Q-factor and the frequency (Qf ), the frequency of measurement (f), and the temperature coefficient of the resonant frequency ( f ). In tabulating these data, we make no judgment on the measurement method and the reliability of the result. It is known that the ceramic properties such as porosity, grain size, raw materials used, impurities, measurement methods, and equipment used for measurements affect the dielectric properties and readers should be aware that exact comparison of data on materials of identical composition and manufactured in different laboratories using different processing conditions and measured by different methods would be expected to lead to small variations in properties. The data of dielectric measurements carried out using impedance methods at low (MHz) frequency is excluded as the errors in these methods mean that a loss tangent less than 10 −3 is unreliable. The data are arranged in the order of increasing relative permittivity. The quality factor of the microwave dielectric ceramics decrease significantly with increasing relative permittivity, as shown in Figure A.1. The inset in the figure shows the variation of quality factor frequency product with Microwave Materials and Applications, First Edition. Edited by Mailadil T. Sebastian, Rick Ubic and Heli Jantunen.

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List of Low‐Loss Ceramic Dielectric Materials and Their Properties

2017

Microwave Materials and Applications 2V Set

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Low temperature sintering and microwave dielectric properties of Zr0.3(Zn1/3Nb2/3)0.7TiO4 ceramics doped with CuO-B2O3

et al. 2016

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Effects of CuO additives and sol–gel technique on NiNb2O6 dielectric ceramics for LTCC application

You

Zhang

2016

J Mater Sci: Mater Electron

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The effects of CuO additives and sol-gel method synthesis on the sintering behavior, microstructure and the microwave dielectric properties of NiNb 2 O 6 ceramics were investigated systematically. The NiNb 2 O 6 ceramics were synthesized with traditional solid state method and sol-gel method, and the CuO additives were used in the solid state method for comparison. The sintering temperature of NiNb 2 O 6 ceramics with the highest densification can be effectively reduced from about 1275˚C to 1050˚C and 1100˚C respectively by using CuO additions and sol-gel technique. To study their applicability in low temperature cofired ceramic (LTCC) technology, dielectric properties have been characterized. The dielectric properties exhibited a significant dependence on the sintering condition, composition and crystal structure of the ceramics.In particular, the 2.5 wt.% CuO-doped NiNb 2 O 6 ceramics sintered at 1050˚C have excellent microwave dielectric properties: ε r =21.45, Q×ƒ=23531GHz, τ f =-27.9ppm/˚C. 2While the NiNb 2 O 6 ceramics prepared by sol-gel method obtain microwave dielectric properties as: ε r =19.16, Q×ƒ=11149GHz, τ f =-27.3ppm/˚C after sintered at 1100˚C for 2h.

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Low temperature sintering and microwave dielectric properties of 7NiNb2O6–9TiO2 ceramics with CuO addition

Cited by 6 publications

References 11 publications

List of Low‐Loss Ceramic Dielectric Materials and Their Properties

List of Low‐Loss Ceramic Dielectric Materials and Their Properties

Low temperature sintering and microwave dielectric properties of Zr0.3(Zn1/3Nb2/3)0.7TiO4 ceramics doped with CuO-B2O3

Effects of CuO additives and sol–gel technique on NiNb2O6 dielectric ceramics for LTCC application

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