Polymer-ceramic nanocomposites based on new concepts for embedded capacitor

Kakimoto, Masa–aki; Takahashi, Akio; Tsurumi, Takaaki; Hao, Jianjun; Li, Li; Kikuchi, Ryohei; Miwa, Takao; Oono, T.; Yamada, Shinji

doi:10.1016/j.mseb.2006.02.032

Cited by 66 publications

(33 citation statements)

References 6 publications

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“…The proceeding increase of functionalities in mobile electronic devices requires a further integration of surface mounted devices into the printed circuit board and a reduction of the necessitated board space (Bhattacharya and Tummala 2000; Kakimoto et al 2006). This leads to the formation of multilayer boards consisting of up to 50 and more different layers.…”

Section: Introductionmentioning

confidence: 99%

“…Typically micron-sized perovskite-type ceramics (predominantly BaTiO 3 , sometimes doped) have been used as high-k-fillers (Bhattacharya and Tummala 2000; Kakimoto et al 2006, Wu et al 2009Das et al 2008). Quite recently a comprehensive review paper covers the dielectric properties of a huge number of different polymer-ceramiccomposites (Sebastian and Jantunen 2010).…”

Section: Introductionmentioning

confidence: 99%

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Development of new polymer–BaTiO3-composites with improved permittivity for embedded capacitors

2011

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A series of commercially available nanosized barium titanates has been investigated with respect to their use as high-k-ceramic filler in polymer based composites with improved dielectric properties. The thermal treatment of the barium titanate powders at 1,000°C causes a significant increase of the composite's permittivity. X-ray diffraction experiments prior and after heat treatment revealed that the barium titanate with smallest particle size and the largest specific surface area possesses the thermodynamically unstable cubic phase. In case of the other investigated barium titanates the crystal lattice is distorted. Thermal treatment induces the phase change into the tetragonal one and crystal lattice relaxation enabling higher permittivity values. Composites with a solid load around 78 wt% with a bimodal particle size distribution show high permittivities around 50 and a low loss factor around 5% suitable for the realization of embedded capacitors via screen printing or tape casting.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of new polymer–BaTiO3-composites with improved permittivity for embedded capacitors

2011

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“…Therefore, many ferroelectric and relaxor ferroelectrics, such as BaTiO 3 (BT), Pb(Mg 1∕3 Nb 2∕3 )O 3 (PMN), Pb(Zr,Ti)O 3 (PZT), (Ba,Sr)TiO 3 (BST), have been widely used in the development of DDCs. [16][17][18][19][20][21][22][23][24][25] Unfortunately, the dielectric constant of a ferroelectric or relaxor ferroelectric is strongly dependent on the temperature. 26 The discovery of CaCu 3 Ti 4 O 12 (CCTO) provides new opportunities/avenues to develop high performance composites due to the facts that CCTO exhibits a very high dielectric constant (> 10 4 ) that is also weakly dependent on the temperature.…”

Section: Dielectric-dielectric Compositesmentioning

confidence: 99%

Physical aspects of 0-3 dielectric composites

2015

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0-3 dielectric composites with high dielectric constants have received great interest for various technological applications. Great achievements have been made in the development of high performance of 0-3 composites, which can be classified into dielectricdielectric (DDCs) and conductor-dielectric composites (CDCs). However, predicting the dielectric properties of a composite is still a challenging problem of both theoretical and practical importance. Here, the physical aspects of 0-3 dielectric composites are reviewed. The limitation of current understanding and new developments in the physics of dielectric properties for dielectric composites are discussed. It is indicated that the current models cannot explain well the physical aspects for the dielectric properties of 0-3 dielectric composites. For the CDCs, experimental results show that there is a need to find new equations/models to predict the percolative behavior incorporating more parameters to describe the behavior of these materials. For the DDCs, it is indicated that the dielectric loss of each constituent has to be considered, and that it plays a critical role in the determination of the dielectric response of these types of composites. The differences in the loss of the constituents can result in a higher dielectric constant than both of the constituents combined, which breaks the Wiener limits.

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“…4) Recently, with the goal of achieving composites with high ε r through higher dispersibility and greater filler loading, surface modification of BaTiO3 using phthalocyanine coating 5), 6) or phosphonic acid modification 7) has been attempted. However, a direct correlation between the agglomeration of the fillers and ε r of polymer composites has rarely been addressed.…”

Section: )-8)mentioning

confidence: 99%

Enhanced dielectric constant of polymer-matrix composites using nano-BaTiO3 agglomerates

Lee

Kim

et al. 2010

J. Ceram. Soc. Japan

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The epoxy/matrix composites incorporating with dispersed and agglomerated nano-BaTiO3 fillers were investigated. The relative dielectric constants of the composites with the agglomerated particles were significantly improved, compared to those of the composites with the well-dispersed particles. In addition, the experimental data were in better agreement with the values calculated by the Lichteneker's model than with those of the conventional Maxwell-Garnett's model which has been widely employed for the calculation of the dielectric constant of polymer/filler composites. In order to promote an agglomeration by interlocking between the nanoparticles, the BaTiO3 powders were heat-treated at various temperatures. An epoxy composite with 40 vol% BaTiO3 heat-treated at 800°C for 1 h exhibited an excellent relative dielectric constant of 67, along with high polarizability, low dielectric loss, and low leakage current. Similarly, the epoxy composites with agglomerated SrTiO3 fillers provided a higher dielectric constant than that of their dispersed counterparts. The origin of the increase in the relative dielectric constant achieved by the agglomeration effect is also suggested.

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Polymer-ceramic nanocomposites based on new concepts for embedded capacitor

Cited by 66 publications

References 6 publications

Development of new polymer–BaTiO3-composites with improved permittivity for embedded capacitors

Development of new polymer–BaTiO3-composites with improved permittivity for embedded capacitors

Physical aspects of 0-3 dielectric composites

Enhanced dielectric constant of polymer-matrix composites using nano-BaTiO3 agglomerates

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