Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

The Special Issue on “Synthesis and Characterization of Ferroelectrics” reports on several physical properties of ferroelectric materials and their technological aspects. Different substitution mechanisms provide ideas toward future improvement of lead-free (Ba,Ca)(Zr,Ti)O3 piezoelectric ceramics, including the electrocaloric effect, fluorescence, and energy storage. It is established that axial and radial element segregation differently influences electrical properties of 0.68Pb(Mg1/3Nb2/3)0.32PbTiO3 (PMN-32PT for short) single crystals. While the electrical properties along the axial direction strongly depend on the PbTiO3 content, the electrical properties along the axial direction are mainly determined by the ratio of Nb and Mg. On the other hand, Fe-substitution of PMN-32PT crystals lead to an enhancement of the coercive field due to wall pinning induced by charged defect dipoles. It is also found, that capacitors based on Pt/Na0.5Bi0.5TiO3/La0.5Sr0.5CoO3 thin films display good fatigue resistance and retention. Another lead-free thin film capacitor fabricated from Ba0.3Sr0.7Zr0.18Ti0.82 features a low leakage current density and high breakdown strength. Such capacitors are essential for energy storage. Furthermore, an enhanced electrocaloric effect on 0.73Pb(Mg1/3Nb2/3)0.27PbTiO3 single crystals is demonstrated. This effect is promising for novel solid-state cooling systems.

PMN-32PT --- characterization --- segregation --- Bridgman technique --- ferroelectric materials --- piezoelectric --- ceramic --- lead-free --- PMN-32PT single crystal --- acceptor doping --- charged defects --- dielectric relaxation --- electrical conduction --- NBT epitaxial film --- ferroelectric properties --- ultraviolet light --- BSZT thin films --- capacitance properties --- RF magnetron sputtering --- PMN-PT --- single crystals --- P–E hysteresis loop --- electrocaloric effect --- Maxwell relation --- n/a --- P-E hysteresis loop

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

The Special Issue on “Synthesis and Characterization of Ferroelectrics” reports on several physical properties of ferroelectric materials and their technological aspects. Different substitution mechanisms provide ideas toward future improvement of lead-free (Ba,Ca)(Zr,Ti)O3 piezoelectric ceramics, including the electrocaloric effect, fluorescence, and energy storage. It is established that axial and radial element segregation differently influences electrical properties of 0.68Pb(Mg1/3Nb2/3)0.32PbTiO3 (PMN-32PT for short) single crystals. While the electrical properties along the axial direction strongly depend on the PbTiO3 content, the electrical properties along the axial direction are mainly determined by the ratio of Nb and Mg. On the other hand, Fe-substitution of PMN-32PT crystals lead to an enhancement of the coercive field due to wall pinning induced by charged defect dipoles. It is also found, that capacitors based on Pt/Na0.5Bi0.5TiO3/La0.5Sr0.5CoO3 thin films display good fatigue resistance and retention. Another lead-free thin film capacitor fabricated from Ba0.3Sr0.7Zr0.18Ti0.82 features a low leakage current density and high breakdown strength. Such capacitors are essential for energy storage. Furthermore, an enhanced electrocaloric effect on 0.73Pb(Mg1/3Nb2/3)0.27PbTiO3 single crystals is demonstrated. This effect is promising for novel solid-state cooling systems.

Research & information: general --- PMN-32PT --- characterization --- segregation --- Bridgman technique --- ferroelectric materials --- piezoelectric --- ceramic --- lead-free --- PMN-32PT single crystal --- acceptor doping --- charged defects --- dielectric relaxation --- electrical conduction --- NBT epitaxial film --- ferroelectric properties --- ultraviolet light --- BSZT thin films --- capacitance properties --- RF magnetron sputtering --- PMN-PT --- single crystals --- P-E hysteresis loop --- electrocaloric effect --- Maxwell relation --- PMN-32PT --- characterization --- segregation --- Bridgman technique --- ferroelectric materials --- piezoelectric --- ceramic --- lead-free --- PMN-32PT single crystal --- acceptor doping --- charged defects --- dielectric relaxation --- electrical conduction --- NBT epitaxial film --- ferroelectric properties --- ultraviolet light --- BSZT thin films --- capacitance properties --- RF magnetron sputtering --- PMN-PT --- single crystals --- P-E hysteresis loop --- electrocaloric effect --- Maxwell relation

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Qu’est-ce qu’un juriste de gauche sous la République de Weimar ? Cet ouvrage tente de répondre à la question à partir de l’exemple de Gustav Radbruch (1878-1949), philosophe du droit, mais aussi militant social- démocrate, défenseur de la démocratie et, pour un temps, député et ministre. Moins connu que Hans Kelsen ou Carl Schmitt, Radbruch est néanmoins intervenu dans les principaux débats juridiques de l’époque, où se cristallisent finalement les enjeux essentiels de cette période de crise que fut Weimar. En étudiant comment ce juriste a tenté de concilier théorie et pratique et de répondre au défi de la crise du droit et de la démocratie, l’ouvrage entend ainsi également contribuer à une meilleure compréhension de la culture politique et intellectuelle de Weimar.

Lawyers --- Radbruch, Gustav, --- Radbrukh, Gustav, --- Radbruch, G. --- Radŭburŭhŭ, G. --- Radŭburŭhŭ, Kusŭtʻapʻŭ Lamberŭtʻŭ, --- Juristes --- Droit --- Socialisme --- Droit social --- Activité politique --- Philosophie --- Radbruch, Gustav --- Allemagne --- Radbruch, Gustav Lambert

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Cosmology --- Cosmologie --- Aristotle. --- Thomas,