Search Results - "Feteira, Antonio"
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Negative Temperature Coefficient Resistance (NTCR) Ceramic Thermistors: An Industrial Perspective
Published in Journal of the American Ceramic Society (01-05-2009)“…Monitoring and control of temperature is of paramount importance in every part of our daily life. Temperature sensors are ubiquitous not only in domestic and…”
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2
Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives
Published in Chemical reviews (26-05-2021)“…Materials exhibiting high energy/power density are currently needed to meet the growing demand of portable electronics, electric vehicles and large-scale…”
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3
Lone-Pair-Induced Covalency as the Cause of Temperature- and Field-Induced Instabilities in Bismuth Sodium Titanate
Published in Advanced functional materials (06-06-2012)“…Bismuth sodium titanate (BNT)‐derived materials have seen a flurry of research interest in recent years because of the existence of extended strain under…”
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4
Bismuth Sodium Titanate Based Materials for Piezoelectric Actuators
Published in Materials (04-12-2015)“…The ban of lead in many electronic products and the expectation that, sooner or later, this ban will include the currently exempt piezoelectric ceramics based…”
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5
Mechanism of enhanced energy storage density in AgNbO3-based lead-free antiferroelectrics
Published in Nano energy (01-01-2021)“…The mechanisms underpinning high energy storage density in lead-free Ag1–3xNdxTayNb1-yO3 antiferroelectric (AFE) ceramics have been investigated. Rietveld…”
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6
B-site vacancy induced Raman scattering in BaTiO3-based ferroelectric ceramics
Published in Journal of the European Ceramic Society (01-10-2020)“…Defects, in particular vacancies, play a crucial role in substituted perovskite systems, influencing the structural features that underpin ferroelectricity…”
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Pb, Bi, and rare earth free X6R barium titanate–sodium niobate ceramics for high voltage capacitor applications
Published in Applied physics letters (03-04-2023)“…0.9Ba(Ti1−xMgx)O3−x-0.1NaNbO3 (BTNN-100xMg) solid solutions are investigated with a view to developing Bi, Pb, and rare earth free, high voltage multilayer…”
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8
Band gap narrowing in ferroelectric KNbO3-Bi(Yb,Me)O3 (Me=Fe or Mn) ceramics
Published in Applied physics letters (26-09-2016)“…The direct optical bandgap in ferroelectric KNbO3-Bi(Yb,Me)O3 (Me = Fe or Mn) ceramics fabricated by the solid state reaction method varies from 3.2 eV for…”
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9
Continuously controllable optical band gap in orthorhombic ferroelectric KNbO3-BiFeO3 ceramics
Published in Applied physics letters (24-04-2017)“…The optical bandgap of orthorhombic ferroelectric KNbO3 is shown to be continuously controllable via Bi and Fe co-substitution according to a K1-xBixNb1-xFexO3…”
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10
High strain (0.4%) Bi(Mg2/3Nb1/3)O3‐BaTiO3‐BiFeO3 lead‐free piezoelectric ceramics and multilayers
Published in Journal of the American Ceramic Society (01-12-2018)“…The relationship between the piezoelectric properties and the structure/microstructure for 0.05Bi(Mg2/3Nb1/3)O3‐(0.95‐x)BaTiO3‐xBiFeO3 (BBFT, x = 0.55, 0.60,…”
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11
BiFeO3-BaTiO3: A new generation of lead-free electroceramics
Published in Journal of advanced dielectrics (01-12-2018)“…Lead-based electroceramics such as Pb(Zr.Ti)O3 (PZT) and its derivatives have excellent piezoelectric, pyroelectric and energy storage properties and can be…”
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12
Temperature stable and fatigue resistant lead-free ceramics for actuators
Published in Applied physics letters (03-10-2016)“…Lead-free ceramics with the composition 0.91K1/2Bi1/2TiO3–0.09(0.82BiFeO3-0.15NdFeO3-0.03Nd2/3TiO3) were prepared using a conventional solid state, mixed oxide…”
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13
Temperature Stable Cold Sintered (Bi0.95Li0.05)(V0.9Mo0.1)O4-Na2Mo2O7 Microwave Dielectric Composites
Published in Materials (27-04-2019)“…Dense (Bi0.95Li0.05)(V0.9Mo0.1)O4-Na2Mo2O7 (100−x) wt.% (Bi0.95Li0.05)(V0.9Mo0.1)O4 (BLVMO)-x wt.% Na2Mo2O7 (NMO) composite ceramics were successfully…”
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14
Study of the temperature dependence of the giant electric field-induced strain in Nb-doped BNT-BT-BKT piezoceramics
Published in Materials research bulletin (01-01-2018)“…Room-temperature (a) giant strain (b) polarisation in Nb-doped BNKBT ceramics [Display omitted] •Nb-doping of BNT-BKT-BT ceramics leads to giant electric field…”
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15
Enhanced Oxide Ion Conductivity in Stabilized δ-Bi2O3
Published in Journal of the American Chemical Society (06-12-2006)“…The substitution of Re into Bi2O3 allows stabilization of the δ-Bi2O3 structure by additional substitution of any lanthanide ion to give, for example, phases…”
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Crystal Structure, Phase Transitions and Photoferroelectric Properties of KNbO3-Based Lead-Free Ferroelectric Ceramics: A Brief Review
Published in Frontiers in materials (30-04-2020)“…Ferroelectric KNbO3 (KN) ceramics were first fabricated in the 1950s, however, their use in commercial technical applications has been hampered by inherently…”
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Comment on the use of calcium as a dopant in X8R BaTiO3-based ceramics
Published in Applied physics letters (02-04-2007)“…Ba Ti 1 − x Ca x O 3 − x ceramics, where 0⩽x⩽0.04, prepared by the mixed oxide route at 1500°C display a strong suppression of the Curie temperature and a…”
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18
Temperature Dependent Piezoelectric Properties of Lead-Free (1-x)K0.6Na0.4NbO3–xBiFeO3 Ceramics
Published in Frontiers in materials (19-05-2020)“…(1-x)K0.4Na0.6NbO3–xBiFeO3 lead-free piezoelectric ceramics were successfully prepared in a single perovskite phase using the conventional solid-state…”
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19
Ba2Bi1.4Nb0.6O6: A Nonferroelectric, High Permittivity Oxide
Published in Chemistry of materials (26-06-2012)Get full text
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High intrinsic permittivity in Na1∕2Bi1∕2Cu3Ti4O12
Published in Applied physics letters (20-11-2006)“…The electrical properties of Na1∕2Bi1∕2Cu3Ti4O12 (NBCTO) ceramics between ∼8 and 400K are electrically inhomogeneous, consisting of semiconducting grains and…”
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