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Dislocations in BaTiO3 ceramics
Physica Status Solidi (a), 1988Bulk dislocations in cubic and tetragonal BaTiO3 are analysed by TEM. Dislocations with Burgers vectors of the type b = a{100} lying along {010} directions are found in stoichiometric material whereas 72° dislocations are predominant in non stoichiometric material. Stacking faults (extended compositional defects in this structure) are observed on {100}
O. Eibl +3 more
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Electroluminescence in ferroelectric BaTiO3
Ferroelectrics, 1980The luminescence emission during polarization reversal in pure BaTiO3 has been investigated. A parallel study of switching and emission light in the temperature range -100°C to 130°C, that contains the four crystallographic phases of the BaTiO3 has been carried out in polydomain and 180-domain samples.
C. Gonzalo +4 more
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Journal of Electroceramics, 2001
Thermoelectricity of mixed ionic electronic conductor BaTiO3+δ is thermodynamically analyzed, and measured across the mixed n/p regime of both undoped and 1.8 m/o A1-doped BaTiO3 at elevated temperatures. There can be 4 different measurement conditions with respect to the nonstoichiometry (δ) redistribution and types of atmosphere gases used to control
Han-Ill Yoo, Chang-Rock Song
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Thermoelectricity of mixed ionic electronic conductor BaTiO3+δ is thermodynamically analyzed, and measured across the mixed n/p regime of both undoped and 1.8 m/o A1-doped BaTiO3 at elevated temperatures. There can be 4 different measurement conditions with respect to the nonstoichiometry (δ) redistribution and types of atmosphere gases used to control
Han-Ill Yoo, Chang-Rock Song
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Fracture Toughness of BaTiO3 and BaTiO3-Al2O3 Composite under Electric Field
2005In order to investigate the effect of electric polarization on fracture toughness of monolithic BaTiO3 and 5 mol% BaTiO3-Al2O3 composite (5B95A), indentation fracture tests were conducted on unpoled and poled samples under various applied electric fields.
Sirirat Rattanachan +2 more
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Applied Physics Letters, 2000
BaTiO 3 shows relaxation effects when minute concentrations of Bi+3 and Fe+3 are added in varying molar ratios. Addition of Bi+3 at the A site reduces the transition maximum (Tm), whereas Fe+3 addition at the B site reduces the value of dielectric constant.
M. Mahesh Kumar +2 more
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BaTiO 3 shows relaxation effects when minute concentrations of Bi+3 and Fe+3 are added in varying molar ratios. Addition of Bi+3 at the A site reduces the transition maximum (Tm), whereas Fe+3 addition at the B site reduces the value of dielectric constant.
M. Mahesh Kumar +2 more
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Piezowiderstandseffekt in BaTiO3-Halbleitern
Solid-State Electronics, 1967Zusammenfassung Bei BaTiO 3 -Halbleitern wird eine hohe Druckabhangigkeit des Widerstandes gefunden. Aus dem Impedanzverhalten ergibt sich, dass dieser Piezowiderstandseffekt im wesentlichen in den Korngrenz-Sperrschichten lokalisiert ist, die auch fur den anomalen Widerstandsanstieg oberhalb der Curietemperatur massgebend sind.
M. Guntersdorfer, W. Heywang
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Effects of BaTiO3 on dielectric behavior of BaTiO3–Ni–polymethyl methacrylate composites
Applied Physics Letters, 2006Effects of ferroelectric BaTiO3 particles were investigated on the dielectric behavior of BaTiO3–Ni–polymethyl methacrylate composites fabricated by a two-step mixing and hot-molding method. The percolation power law in the smearing region was employed to explain the experimental results. The composites exhibit the dependence of the dielectric constant,
Hyung-Woo Choi +6 more
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Solid State Ionics, 1991
Abstract Possible defect disorders are considered for BaTiO 3 within both n -type and p -type regimes. Basic for defect structure considerations is the model which is build up on a general lattice electroneutrality conditions. Simplified electroneutrality conditions are discussed in terms of several defect models within both n -type and p -type ...
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Abstract Possible defect disorders are considered for BaTiO 3 within both n -type and p -type regimes. Basic for defect structure considerations is the model which is build up on a general lattice electroneutrality conditions. Simplified electroneutrality conditions are discussed in terms of several defect models within both n -type and p -type ...
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Solid State Communications, 1967
Abstract The Raman spectrum of BaTiO3 is investigated in the tetragonal and the cubic phase, where it is found that two strong transitions are still present. The temperature dependence of the intensities for the lines perculiar to the tetragonal phase correlates well with the presence of a tetragonal distortion.
J.L. Parsons, L. Rimai
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Abstract The Raman spectrum of BaTiO3 is investigated in the tetragonal and the cubic phase, where it is found that two strong transitions are still present. The temperature dependence of the intensities for the lines perculiar to the tetragonal phase correlates well with the presence of a tetragonal distortion.
J.L. Parsons, L. Rimai
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Journal of Materials Science Letters, 1999
The perovskite oxide BaTiO{sub 3} is a ferroelectric whose electrical properties have been studied extensively because of its many technical applications, as sensors, transducers, and actuators, for example. The technological importance of BaTiO{sub 3} has been demonstrated repeatedly, and its physical properties in ceramic form have been thoroughly ...
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The perovskite oxide BaTiO{sub 3} is a ferroelectric whose electrical properties have been studied extensively because of its many technical applications, as sensors, transducers, and actuators, for example. The technological importance of BaTiO{sub 3} has been demonstrated repeatedly, and its physical properties in ceramic form have been thoroughly ...
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