Ccto10 Unit 2 Lab Report

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K.D.A. Saboia et al., (2007) have been prepared the Bi4Ti3O12–CaCu3Ti4O12 {[BIT(X)–CCTO(100-X)]} composite powders through solid state reaction method and calcined in the range of 900 to 1020 ºC for 12 h. The as-prepared powders have modified in the form of thick film onto alumina ceramic substrate by utilizing screen printing. At 100 Hz, the value of dielectric constant (κ) of CCTO100 and BIT100 is 316.61 and 53.64 respectively. Conversely, the composite with X=20 % shows an unexpected dielectric constant of 409.71, which is around 20% higher in comparison with the CCTO. These measurements strongly suggest that the BIT–CCTO composite are good candidates for applications where one search for high-κ materials with low loss in radio-frequency range. …show more content…

G. Pinheiro et al., (2007) were screen printed the BITX–CCTO1–X (Bi4Ti3O12)X–(CaCu3Ti4O12)1-X composite thick films on alumina ceramic substrate. One can easily conclude that the increase of the BIT phase in the BITX–CCTO1–X composite is decreasing the κ value at 100 Hz of frequency. However the exploratory estimation of the dielectric constant for X = 0.1 is much higher when contrasted with this constituent phases (BIT and CCTO). It is a great suggestion that a nonlinear mixing effect is occurred between the two different constituent phases during the formation of composite matrix. Searching now for BTO–CCTO composites, which is a best choice for use in microwave devices like dielectric resonators due to their combined nature of high dielectric constant and low

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