Results 41 to 50 of about 2,534 (200)
AIP Advances, 2020 The present work demonstrates the effect of the grain size on electrocaloric and pyroelectric properties in BaTiO3-based ceramics prepared by a chemical coating method and then sintered in a reducing atmosphere at different temperatures.
Satyanarayan Patel, Manish Kumar
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APL Materials, 2021 A large electrocaloric effect is reported in a strain-engineered Ba0.85Ca0.15Ti0.9Zr0.1O3 (BCZT) thin film heterostructure driven by the near room-temperature electro-structural phase transition.
Abhisikta Barman +7 more
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The impact of hysteresis on the electrocaloric effect at first-order phase transitions
, 2017 We study the impact of thermal hysteresis at the first-order structural/ferroelectric phase transitions on the electrocaloric response in bulk BaTiO$_3$ by performing molecular dynamics simulations for a first-principles-based effective Hamiltonian.
Ederer, Claude +2 more
core +1 more source
Direct measurement of electrocaloric effect in lead-free Ba(SnxTi1-x)O3 ceramics [PDF]
, 2017 In this study, we report on investigation of the electrocaloric (EC) effect in lead-free Ba(SnxTi1-x)O3 (BSnT) ceramics with compositions in the range of 0.08 ≤ x ≤ 0.15 by the direct measurement method using a differential scanning calorimeter.
Dkhil, Brahim +6 more
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Large electrocaloric effects in single-crystal ammonium sulfate [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016 Electrocaloric (EC) effects are typically studied near phase transitions in ceramic and polymer materials. Here, we investigate EC effects in an inorganic salt, namely ammonium sulfate (NH 4 ) 2 SO 4 , with an order–disorder transition whose onset occurs at 223 K on ...
Crossley, S, Li, W, Moya, X, Mathur, ND
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Electronic Materials, 2022 Electrocaloric effect is the adiabatic temperature change in a dielectric material when an electric field is applied or removed, and it can be considered as an alternative refrigeration method. Materials with ferroelectric order exhibit large temperature
Georgia A. Boni +7 more
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Step-like features on caloric effects of graphenes
, 2014 We considered a graphene nano-ribbon with a longitudinal electric field (along $x$ direction) and a transversal magnetic field (along $z$ direction), and then observe (i) the electrocaloric effect ruled by an applied magnetic field and (ii) the ...
Reis, M. S.
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Direct and indirect measurements on electrocaloric effect : recent developments and perspectives [PDF]
, 2016 Y.L. and B.D. acknowledge the China Scholarship Council (CSC) for funding Y.L.'s stay in France and a public grant overseen by the French National Research Agency (ANR) as part of the “Investissements d'Avenir” program (Reference: ANR-10-LABX-0035, Labex
Dkhil, Brahim +2 more
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Perturbative approach to electrocaloric effects
, 2020 We show that the electrocaloric (EC) effect -- e.g., the temperature change experienced by an insulator upon application of an electric bias -- lends itself to a straightforward interpretation when expressed as a Taylor series in the external field. Our formalism explains in a unified and simple way the most notable small-field effects reported the ...
Graf, Mónica, Íñiguez, Jorge
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Advanced Materials Technologies, EarlyView.The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz +5 more
wiley +1 more source