Lead-based materials and Morphotropic Phase boundary (MPB) 10
Tuning the electrocaloric enhancement near the morphotropic phase boundary in lead-free ceramics
... the materials with the highest ECE performances without any loss in efficiency at any required temperature of operation, whether it is near 25 °C for household refrigeration or 200 °C for on-chip cooling in ...
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Electrocaloric enhancement near the morphotropic phase boundary in lead-free NBT-KBT ceramics
... field-induced phase transi- tion from tetragonal AFE to a more entropic tetragonal FE ...polar phase with differ- ent dipolar directions at low applied fields as reported by Viola et ...P4bm phase is ...
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Dielectric and piezoelectric perfomance of lead-free ceramics of boron sodium gadolinate niobate at morphotropic phase boundary
... of Morphotropic Phase Boundary (MPB) possessed by ...the phase boundary that exists in certain ferroelectrics where a change of composition results in a change of phase, so that ...
9
Synthesis and Characterizations of Lead Free KNN Ceramics Near Morphotropic Phase Boundaries
... of lead free ferroelectric materials based on the most studied perovskite compounds such as BT, KNN and NBT to replace PZT based material ...new lead free ferroelectric systems with ...
117
Nanostructured Ceramics of Potassium Sodium Bismuth Titanate: Hydrothermal Synthesis and Piezoelectric Response at Morphotropic Phase Boundary
... this lead-free ceramic. It is seen that the above composition of this lead-free composite ceramic, synthesized follow- ing a relatively simple procedure, exhibits piezoelectric properties comparable to PZT ...
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Morphotropic phase boundary in the Pb-Free (1 - X)BiTi3/8Fe2/8Mg3/8O3-xCaTiO3 System: Tetragonal polarization and enhanced electromechanical properties
... bismuth-based lead-free system as it has proved diffi cult to prepare phases with polarization directed along the [001] p primitive cell edge in such ...systems based on K ...
7
Novel Multiferroic Magnetoelectric Materials from the Bix+yPb1-x-yFexMnyTi1-x-yO3 Ternary System along the Line of Morphotropic Phase Boundaries
... a boundary between a rhombohedral R3c and an orthorhombic Pnma phase has been established with increasing RE-substitution, which was claimed to be ...
283
Evolving morphotropic phase boundary in lead free (Bi1/2Na1/2)TiO3–BaTiO3 piezoceramics
... Any possible electrical arcing or breakdown during the experiments that could lead to misinterpretation of the structural information was monitored by an additionally installed optical strain sensor. For stress ...
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PHASE STRUCTURE, DIELECTRIC AND PIEZOELECTRIC PROPERTIES OF MODIFIED-PZT CERAMICS NEAR THE MORPHOTROPIC PHASE BOUNDARY
... Authors are thankful to Pr. A. Meghazzi, Director, Applied Chemistry Laboratory of University of Biskra (Algeria), for constant encouragement to this work. The authors also are greatly thankful to Pr. M. Poulain, ...
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Synthesis and Characterizations of SrBi2Ta2O9 Modified NBT-BT and NBT-KNN Ferroelectric Ceramics near Morphotropic Phase Boundary
... Piezoelectric Materials Piezoelectric materials possess the coupling between electrical and mechanical energies, ...piezoelectric materials lack center of crystallographic ...these materials ...
169
Large Polarization and Susceptibilities in Artificial Morphotropic Phase Boundary PbZr 1 x Ti x O 3 Superlattices
... the phase-boundary for this composition than the parent-PbZr ...exhibiting phase-boundary-like character increases—a trend shown schematically (and quantitatively based on the intensity ...
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Morphotropic Phase Boundary in the Pb-Free (1-x)BiTi3/8Fe2/8Mg3/8O3-xCaTiO(3) System: Tetragonal Polarization and Enhanced Electromechanical Properties
... COMMUNICATION This enhances the likelihood of locking in other long-range polarization directions when Ti rather than Fe is the B site cation introduced by solid solution formation and may enable the two perovskite ...
7
Atomically resolved domain boundary structure in lead zirconate-based antiferroelectrics
... Domain boundary (DB) engineering is an emerging field in developing multifunctional ferroic materials, given that various domains and their boundary structures can lead to unique physical, ...
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An Algorithm based on Predicting the Interface in Phase Change Materials
... T Phase change materials are substances that absorb and release thermal energy during the process of melting and ...makes phase change material (PCM) a favourite choice to integrate it in ...PMC ...
6
Synthesis and pulsed laser deposition of lead-based cuprate superconducting materials
... 191 7.10 Deposition of Pb-2213 phase on S i ( lll) substrate The quality o f the films deposited by PLD, either in-situ or ex-situ, depends upon m any param eters, i.e., the deposition geom etry, environm ent, tem ...
264
Phase Diagrams and Defect Thermodynamics to Devise Doping Strategies in Lead Chalcogenide Thermoelectric Materials and its Alloys
... separation based on accuracies: The PARROT module allows the user to input exper- imental data that are significantly inaccurate compared with their true values in addition to the data which are free from such ...
140
Energy recovery systems based on high temperature phase change materials
... I NTRODUCTION 8 employed as PCM. The performances of the device are analysed and optimized by means of computational thermo-fluid dynamic simulations. In addition to the development of the PCM-based device, a new ...
246
Study of Ceria-based materials and their application in electrochemical and gas-phase catalysis
... 95 reduced to metallic copper [30]. In fact, considering the 2 nm average size of our copper nanoparticles and the crystal dimensions of Cu(OH) 2 (2.94 x 10.59 x 5.256 Å) and Cu 2 O, (4.267 x 4.267 x 4.267 Å) [24, 25], ...
114
Screening Life Cycle Assessment of Silver Based Conductive Adhesive vs Lead Based Solder and Plating Materials
... water lead emissions due to ‘avoided’ lead emissions from landfill and from lead production, as well as ‘avoided’ sulfur dioxide emissions from palladium ...actual lead emissions, both from ...
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Effect of off center ion substitution in morphotropic lead zirconate titanate
... of lead vacancies in PZT as a possible center for trapping holes has been proposed in literature, 28 and these centers support the observed PF conduction ...
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