Results 171 to 180 of about 22,359 (230)
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Coulomb Microexplosions of Ferroelectric Ceramics
Physical Review Letters, 2008Energetic neutral and extreme ultraviolet emission initiated by the dense plasma propagation along a ferroelectric surface has been found. It was shown that the emission of neutrals is characterized by a large divergence and velocities up to 7 x 10(7) cm/s.
D, Yarmolich +3 more
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Development of Tunable Ferroelectric Ceramic Capacitors
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2023Ferroelectric perovskite ceramics with a high dielectric constant, low loss, high tunability, and high electric breakdown are ideal for nonlinear transmission lines (NLTLs) to generate radio frequency (RF) signals at high-power levels. To achieve the required properties, a comprehensive study of the material phase transitions and the optimal ratio ...
Rangel G. Aredes +7 more
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MECHANICAL PROPERTIES OF FERROELECTRIC CERAMIC NANOCOMPOSITES
International Journal of Nanoscience, 2005The micro- and nano-indentation techniques and compression tests were employed to determine the mechanical properties of PZT based composites dispersed with Al 2 O 3 nano-particles for comparison. Compared with the reduced modulus, the nano-hardness, which exhibited indentation size effect (ISE), seemed to be more sensitive to the indentation depth ...
Wang, XX, Kwok, KW, Lee, KL, Kah Soh, AK
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Fracture of ferroelectric ceramics
Ferroelectrics, 1983Abstract This paper surveys the temperature, microstructural and environmental variations of the fracture properties of ferroelectric ceramics. Earlier work shows that fracture toughness decreases on heating through the Curie temperature. There is also anomalous behavior in the strength at small crack sizes, indicative of a grain size effect.
R. F. Cook +3 more
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Ceramics–Boron Carbide-Ferroelectrics
2021This chapter brings together various studies on materials that happen to be ceramics. This includes Boron Carbide, (C11B) CBC or B4C, where we seek alloys or other changes to make it ductile, The BaTiO3 ferroelectric where we examined 90 and 180 degree domain wall boundaries, and Silica glass Applications to BaZrO3 electrolytes are
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Ferroelectric zirconate ceramics
1949 Conference on Electrical Insulation, 1949A new class of ferroelectric ceramics was revealed in a study of mixtures of lead zirconate and up to 40 mol percent barium zirconate. These compositions were prepared from pure zirconium oxide, lead monoxide and barium carbonate mixed in the desired stoichiometric proportions and calcined in covered platinum crucibles at 1050°C.
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Thermodynamic Theory of Ferroelectric Ceramics
Physical Review, 1957A review of theories of ferroelectricity and of experimental data on ferroelectric ceramics leads to the conclusion that an analytic theory of such ceramics on microscopic basis does not seem feasible. A thermodynamic continuum theory is developed here, which is based on the postulated isomorphism, relevant to small signals only, between a polarized ...
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Thermal stresses in ferroelectric ceramics
Ferroelectrics, 1998The conception of special thermal stresses in ferroelectrics ceramics based on the existence of conglomerates of grains is presented.
S. O. Kramarov, Yu. V. Dashko
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Ferroelectric ceramic memory devices
1964 International Electron Devices Meeting, 1964This paper discusses the information storage characteristics of an improved lead zirconate-lead titanate ferroelectric ceramic composition. The memory elements discussed are ceramic disc resonators operated in the radial extensional mode and utilizing small-signal, nondestructive readout of the remanent polarization state.
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