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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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Nonlinear Deformation of Ferroelectric Ceramics
Journal of the American Ceramic Society, 1993Ferroelectric ceramics used in advanced actuator systems may be subject to high stresses and large deformations that may lead to nonlinearity and performance degradation. A preliminary experimental investigation has been undertaken to study the relevant mechanical responses.
H.C. Cao, Anthony G. Evans
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Printing with ferroelectric ceramics
Ferroelectrics, 1997Abstract For printing applications, ferroelectric (FE) material can be poled without electrodes by charging the surface at the image areas in one polarity and the background to the opposite polarity. On the surface of FE-ceramics, high electric fields are produced which are able to attract or repel charged toner particles. This property can be used for
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Piezoelectric properties of a ferroelectric ceramic
Strength of Materials, 19841. The laser interferometer that was developed has a resolving power of 30 A and ensures an error no greater than 0.05% for the measurement of quasistatic strains, which makes it possible to use the interferometer to study the physicomechanical properties of lowductility ceramics. 2.
G. G. Pisarenko +3 more
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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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Ferroelectricity in a pure BiFeO3 ceramic
Applied Physics Letters, 2000The difficulties in synthesizing phase pure BiFeO3 are well known. In this letter we are reporting the optimized synthesis conditions for obtaining phase pure BiFeO3 ceramic. The oxide mixing technique followed by leaching with dilute nitric acid has been used for the synthesis.
Mahesh Kumar +3 more
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Fracture features of ferroelectric ceramics
Ferroelectrics, 1998Abstract Some mechanisms of the strength and fracture toughness alteration for the ferroelectric ceramics (FC) using the early computer simulations are considered. The microcracking processes and effects of the crack bridging are studied. Finally, the growth features of the steady-state crack into ferroelectrics domain structure are investigated.
Lyubov Parinova, Ivan A. Parinov
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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.
Yu. V. Dashko, S. O. Kramarov
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Ultrahigh piezoelectricity in ferroelectric ceramics by design
Nature Materials, 2018Piezoelectric materials, which respond mechanically to applied electric field and vice versa, are essential for electromechanical transducers. Previous theoretical analyses have shown that high piezoelectricity in perovskite oxides is associated with a flat thermodynamic energy landscape connecting two or more ferroelectric phases.
Fei Li +13 more
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Domain switching in polycrystalline ferroelectric ceramics
Nature Materials, 2005Ferroelectric ceramics are widely used as sensors and actuators for their electro-mechanical properties, and in electronic applications for their dielectric properties. Domain switching--the phenomenon wherein the ferroelectric material changes from one spontaneously polarized state to another under electrical or mechanical loads--is an important ...
Ersan Üstündag +4 more
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