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high-k piezoelectric ceramics

Tailoring the structure and piezoelectric properties of BiFeO3-(K0.5Bi0.5)TiO3-PbTiO3 ceramics for high temperature applications

Tailoring the structure and piezoelectric properties of BiFeO3-(K0.5Bi0.5)TiO3-PbTiO3 ceramics for high temperature applications

... belong to the rhombohedral R3c phase as determined using laboratory X-rays and neutron diffraction. 26 Morozov and Matsuo determined the presence of a MPB at x ¼ 0.6 between the polar rhombohedral R3c phase and a ...

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Microstructural and Ferroelectric Properties of Bi0 5(Na,K)0 5TiO3 Based Modified by Bi0 5Li0 5TiO3 Lead Free Piezoelectric Ceramics

Microstructural and Ferroelectric Properties of Bi0 5(Na,K)0 5TiO3 Based Modified by Bi0 5Li0 5TiO3 Lead Free Piezoelectric Ceramics

... that the polar phases were existed and there were no phase transition from polar to non-polar. In fact, the Li + ions can substituted at Ti 4 + ions site and give rise to the generation of oxygen vacancies to form the ...

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High strain (0 4%) Bi(Mg2/3Nb1/3)O3 BaTiO3 BiFeO3
lead free piezoelectric ceramics and multilayers

High strain (0 4%) Bi(Mg2/3Nb1/3)O3 BaTiO3 BiFeO3 lead free piezoelectric ceramics and multilayers

... 13 R. Wang, K. Wang, F. Yao, J. Li, F. H. Schader, K. G. Webber, W. Jo, and J. Rödel, Temperature Stability of Lead-Free Niobate Piezoceramics with Engineered Morphotropic Phase Boundary, J. Am. Ceram. ...

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Structural studies of novel bismuth containing piezoelectric ceramics

Structural studies of novel bismuth containing piezoelectric ceramics

... under high pressure and reported to be ferroelectric with triclinic ...and K 1/2 Na 1/2 NbO 3 [3–5] in order to ameliorate the physical properties of the end ...33 piezoelectric charge coe ffi cient ...

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Influence of Sintering Temperature on Densification, Structure and Microstructure of Li and Sb Co Modified (K,Na)NbO3 Based Ceramics

Influence of Sintering Temperature on Densification, Structure and Microstructure of Li and Sb Co Modified (K,Na)NbO3 Based Ceramics

... possessed high piezoelectric constants ...KNN ceramics with a relative density higher than 99% ...KNN ceramics by lowering the sintering temperature and hence suppressing the volatilization of ...

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An equivalent dipole analysis of PZT ceramics and lead-free piezoelectric single crystals

An equivalent dipole analysis of PZT ceramics and lead-free piezoelectric single crystals

... provide piezoelectric behavior: a 3 atom dipole defined by an effective ionic charge and asymmetry in the strength of the interatomic ...any piezoelectric material, both ferroelectric and non-ferroelectric, ...

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Dielectric and Piezoelectric Properties of (1-x)K0.5Bi0.5TiO3-xBa(Ti0.8Zr0.2)O3 Ceramics

Dielectric and Piezoelectric Properties of (1-x)K0.5Bi0.5TiO3-xBa(Ti0.8Zr0.2)O3 Ceramics

... enhanced piezoelectric coefficients, but values degrade on heating the samples above room-temperature, due to disruption of the polar domain structure on cycling through the PPT ...working piezoelectric for ...

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Research on the High Strength Glass Ceramics/Mullite Ceramics Composites

Research on the High Strength Glass Ceramics/Mullite Ceramics Composites

... mullite ceramics thin tile further and get a good decoration effect, a kind of micro- crystal glass is prepared on the surface of the mullite ce- ramics and a better result is ...

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Assessment of the Possibility of Applying Ceramic Materials in Common Rail Injection Systems

Assessment of the Possibility of Applying Ceramic Materials in Common Rail Injection Systems

... requires high resistance to various types of wear from their ...engineering ceramics, this approach has limited ...R k , R vk ) enable description of the surface ...in ceramics [3], finishing ...

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High curie temperature ternary piezoelectric ceramics

High curie temperature ternary piezoelectric ceramics

... US 8,524,109 B2 1 2 HIGH CURIE TEMPERATURE TERNARY PIEZOELECTRIC CERAMICS solid solution Wherein the proportions of the perovskite metal oxides BiFeO3, PbZrO3, and PbTiO3 are controlled [r] ...

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Processing composition structure effects on the optical band gap of KNbO3 based ceramics

Processing composition structure effects on the optical band gap of KNbO3 based ceramics

... Two main lines of KN ceramic preparation can be distinguished in the literature: (1) single calcination and (2) double calcination steps for the synthesis. Method 1 and Method 2 present two stages during calcination that ...

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The fabrication and microstructural evolution, at elevated temperatures, of syalon ceramics

The fabrication and microstructural evolution, at elevated temperatures, of syalon ceramics

... and low coefficient of friction. Thus silicon nitride-based ceramics were identified early as candidates with most promise for development for use in A.G.T's. The ensuing programme led to a wide range of sili­ con ...

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Electrical Output Characteristics of Piezoelectric Ceramics Cymbal Transducer with Drop Weight Impact Techniques

Electrical Output Characteristics of Piezoelectric Ceramics Cymbal Transducer with Drop Weight Impact Techniques

... actual piezoelectric coefficient of the Cymbal transducer was amplified several times because the presence of a cavity enabled the metal end-caps to serve as a mechanical transformer, transforming and amplifying a ...

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Electrical Properties of CuO Doped PZT PZN PMnN Piezoelectric Ceramics Sintered at Low Temperature

Electrical Properties of CuO Doped PZT PZN PMnN Piezoelectric Ceramics Sintered at Low Temperature

... 0.006 were obtained at x = 0.125. These are probably related to characteristics of the density and the increasing grain size. During sintering, the presence of liquid phase enhances the density and grain size, which ...

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Effect of Chemical Composition on the Optical Properties and Fracture Toughness of Transparent Magnesium Aluminate Spinel Ceramics

Effect of Chemical Composition on the Optical Properties and Fracture Toughness of Transparent Magnesium Aluminate Spinel Ceramics

... Figure 4 demonstrates the total transmission and reflection spectra of the fabricated spinel ceramics. Reflection spectra of spinel II and spinel III are nearly constant at a value of 10% throughout the measured ...

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The Effects of Annealing Process on Dielectric and Piezoelectric Properties of BMT Base Lead Free Ceramics

The Effects of Annealing Process on Dielectric and Piezoelectric Properties of BMT Base Lead Free Ceramics

... free ceramics that have been sintered at different ...of piezoelectric materials ...and piezoelectric properties are discussed in the next ...

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Temperature dependence of the intrinsic and extrinsic contributions in BiFeO3- (K0.5Bi0.5)TiO3-PbTiO3 piezoelectric ceramics

Temperature dependence of the intrinsic and extrinsic contributions in BiFeO3- (K0.5Bi0.5)TiO3-PbTiO3 piezoelectric ceramics

... converse piezoelectric coefficient upon application of an AC electric ...The piezoelectric Rayleigh coefficient (a d ) can be obtained experimentally with ...

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Particle Size Control, Sinterability and Piezoelectric Properties of BaTiO3 Prepared by a Novel Composite Hydroxide Mediated Approach

Particle Size Control, Sinterability and Piezoelectric Properties of BaTiO3 Prepared by a Novel Composite Hydroxide Mediated Approach

... [21] V. Buscaglia, M. T. Buscaglia, M. Viviani, L. Mitoseriu, P. Nanni, V. Trefiletti, P. Piaggio, I. Gregora, T. Ostap- chuk, J. Pokorny and J. Petzelt, “Grain Size And Grain Boundary-Related Effects on the Properties ...

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Elastic and Dielectric Evaluation of the Piezoelectric Response of Ferroelectrics Using Unpoled Ceramics

Elastic and Dielectric Evaluation of the Piezoelectric Response of Ferroelectrics Using Unpoled Ceramics

... On the other hand, if the sample is unpoled and the vibration stress is uniform over a length scale including several domains, δP = d : σ ' 0, because d ' 0. This condition holds for forced or resonant vibrations of ...

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Enhanced Piezoelectric Properties of Piezoelectric Single Crystals by Domain Engineering

Enhanced Piezoelectric Properties of Piezoelectric Single Crystals by Domain Engineering

... Domain configurations in the ferroelectric materials can determine the ferroelectric related properties such as piezo- electricity, pyroelectricity and so on. Thus, one of the most interesting investigations for the ...

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