Effect of TiO2 doped Ni electrodes on the dielectric properties and microstructures of (Ba0.96Ca0.04)(Ti0.85Zr0.15)O3 multilayer ceramic capacitors

Chiang, Chen Su; Lee, Ying Chieh; Shiao, F. T.; Lee, Wen-Shi; Hennings, D.

doi:10.1016/j.jeurceramsoc.2011.11.009

Cited by 19 publications

(5 citation statements)

References 25 publications

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“…One of the reasons for the decrease in permittivity is the smaller grain size. It is well‐known that the permittivity of dielectric ceramics depends strongly on the grain size or particle size …”

Section: Resultsmentioning

confidence: 99%

“…It is well-known that the permittivity of dielectric ceramics depends strongly on the grain size or particle size. 30,31 Figure 8 (b) shows the Q 9 f values of the Bi 2 Mo 2 O 9 ceramics sintered at 620°C and 640°C as a function of the Nb 2 O 5 level. In contrast with the permittivity, the Q 9 f values of Bi 2 Mo 2 O 9 ceramics increased with increasing Nb 2 O 5 content.…”

Section: May 2013mentioning

confidence: 99%

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Effects of Nb₂O₅ Doping on the Microwave Dielectric Properties and Microstructures of Bi₂Mo₂O₉ Ceramics

2013

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This study investigated the effects of the addition of Nb2O5 and sintering temperature on the properties of Bi2Mo2O9 ceramics. The ceramics were sintered in air at temperatures ranging from 620°C to 680°C. The addition of small amounts of Nb2O5 as a dopant significantly affected the crystalline phase and the microwave dielectric properties of the Bi2Mo2O9 ceramics. The secondary phase, γ‐Bi2MoO6, was observed when Nb2O5 was added. However, unlike the Bi2Mo2O9 ceramic without Nb2O5 sintered above 645°C, the ceramics with 3 mol% Nb2O5 contained no γ‐Bi2MoO6 when sintered at 660°C. The Q × f value and τf of the Bi2Mo2O9 ceramics were improved by Nb2O5 doping. The Bi2Mo2O9 ceramics doped with 2 mol% Nb2O5 exhibited the best microwave dielectric properties, with a permittivity of 36.5, a Q × f value (f = resonant frequency, Q = 1/dielectric loss at f) of 14100 GHz and τf of +5.5 ppm/°C after sintering at 620°C.

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Section: Resultsmentioning

confidence: 99%

Section: May 2013mentioning

confidence: 99%

Effects of Nb₂O₅ Doping on the Microwave Dielectric Properties and Microstructures of Bi₂Mo₂O₉ Ceramics

2013

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“…A large number of BaTiO 3 -based (BT) solid solutions have been studied in the last years due to environmental concerns which are driving the exploration for new Pb-free piezo/ferroelectric materials with superior performances 1,2 . BaTiO 3 -based ceramics is widely used ferroelectrics in the microelectronic industry, especially as piezoelectric actuators, dielectric material in multilayer ceramic capacitors (MLCC), pyroelectric detectors, electroluminescent panels, embedded capacitance in printed circuit boards and positive temperature coefficient of resistivity (PTCR) sensors, et al [3][4][5] The solid solution of BaZr x Ti 1-x O 3 (BZT) is one of the most important compositions for dielectrics in multilayer ceramic capacitors 6 , because the ion Zr has higher chemical stability than the ion Ti 7 , and the high permittivity of the BaTiO 3 ceramic is increased more by the addition of zirconium. In particular, modified (BZT) ceramics receives considerable attention due to their tunable behavior and better electrical properties 8,9 , and the nature of the ferroelectric phase transition of BZT bulk ceramics is known to strongly change with the Zr content increasing.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Dielectric Behavior of Ytterbium Doped BaZr0.1Ti0.9O3 Ceramics

Cui

Sang

et al. 2016

Mat. Res.

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BaZr 0.1 Ti 0.9 O 3 ceramics of perovskite structure are prepared by solid state reaction method with addition of x Yb 2 O 3 (x= 0.0, 0.1, 0.3, 0.5 and 0.7 mol%), respectively, and their dielectric properties are investigated. Room temperature X-ray diffraction study suggested that the compositions have a single phase with a perovskite structure. A small decrease in the grain size is observed with an increase in the Yb content. The bulk density increased with increasing the Yb content for the samples sintered at 1250 0C, and the bulk densities show the maximal value for the samples sintered at 1280 0C, 1300 0C and 1330 0C. The dielectric constant can reach to 4500 or more for the sample sintered at 1300 0C, and the variation of dielectric loss with temperature is more stable for Yb 2 O 3-doped BZT10 ceramics, which proves that Yb 2 O 3 doping has a great influence on the dielectric properties in BZT10 ceramics. With the increase of Yb 2 O 3 content, T c rises at first, and when x exceeds 0.1 mol%, T c shifts towards to lower temperature with the Yb 2 O 3 concentration increasing.

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“…11) BaTiO 3 or TiO 2 particles have been doped into commercial Ni paste to ameliorate the shrinkage mismatch between the dielectric sheets and electrode layers during chip sintering. 12,13) To ensure a high packing density of Ni particles in the printed layers, the particle size of the BaTiO 3 additive in the Ni paste must be sufficiently small compared with that of the Ni powder. Recently, Ni paste with 120 nm Ni particles and 20 nm BaTiO 3 powders has been adopted in high-end current MLCCs.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of highly crystallized BaTiO₃layer on Ni nanoparticles

Hao

Wang

Zhang

et al. 2014

Jpn. J. Appl. Phys.

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A uniform polycrystalline BaTiO 3 layer is coated on Ni nanoparticles by an economic and effective one-step sol-precipitation method for future applications in next-generation multilayer ceramic capacitors. Using NaOH to provide strong alkaline conditions, a highly crystallized BaTiO 3 layer is obtained with high efficiency. The influence of the BaTiO 3 coating amount on the properties of Ni powders is examined. Transmission electron microscopy and energy-dispersive spectroscopy show that the BaTiO 3 layer is continuous and uniform. X-ray photoelectron spectra of the Ba, O states show that a strong bonding was formed between the coating layer and the Ni surfaces. Through this bonding, BaTiO 3 can heterogeneously nucleate and crystallize on the Ni surfaces. This polycrystalline BaTiO 3 layer is very effective in protecting Ni from oxidation as well as increasing the shrinkage onset temperature of Ni nanoparticles. Moreover, these properties can be further improved by increasing the BaTiO 3 coating amount.

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Effect of TiO2 doped Ni electrodes on the dielectric properties and microstructures of (Ba0.96Ca0.04)(Ti0.85Zr0.15)O3 multilayer ceramic capacitors

Cited by 19 publications

References 25 publications

Effects of Nb₂O₅ Doping on the Microwave Dielectric Properties and Microstructures of Bi₂Mo₂O₉ Ceramics

Effects of Nb₂O₅ Doping on the Microwave Dielectric Properties and Microstructures of Bi₂Mo₂O₉ Ceramics

Microstructure and Dielectric Behavior of Ytterbium Doped BaZr0.1Ti0.9O3 Ceramics

Preparation and characterization of highly crystallized BaTiO₃layer on Ni nanoparticles

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Effect of TiO2 doped Ni electrodes on the dielectric properties and microstructures of (Ba0.96Ca0.04)(Ti0.85Zr0.15)O3 multilayer ceramic capacitors

Cited by 19 publications

References 25 publications

Effects of Nb2O5 Doping on the Microwave Dielectric Properties and Microstructures of Bi2Mo2O9 Ceramics

Effects of Nb2O5 Doping on the Microwave Dielectric Properties and Microstructures of Bi2Mo2O9 Ceramics

Microstructure and Dielectric Behavior of Ytterbium Doped BaZr0.1Ti0.9O3 Ceramics

Preparation and characterization of highly crystallized BaTiO3layer on Ni nanoparticles

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Effects of Nb₂O₅ Doping on the Microwave Dielectric Properties and Microstructures of Bi₂Mo₂O₉ Ceramics

Effects of Nb₂O₅ Doping on the Microwave Dielectric Properties and Microstructures of Bi₂Mo₂O₉ Ceramics

Preparation and characterization of highly crystallized BaTiO₃layer on Ni nanoparticles