BiFeO3-BaTiO3: A new generation of lead-free electroceramics
Lead-based electroceramics such as Pb (Zr. Ti) O3 (PZT) and its derivatives have excellent
piezoelectric, pyroelectric and energy storage properties and can be used in a wide range of …
piezoelectric, pyroelectric and energy storage properties and can be used in a wide range of …
Evaluation of the pavement geothermal energy harvesting technologies towards sustainability and renewable energy
Continually using fossil fuels as the main source for producing electricity is one of the main
factors causing global warming. Through the past years, several efforts have been made …
factors causing global warming. Through the past years, several efforts have been made …
Highly reversible extrinsic electrocaloric effects over a wide temperature range in epitaxially strained SrTiO3 films
S Zhang, J Deliyore-Ramírez, S Deng, B Nair… - Nature Materials, 2024 - nature.com
Electrocaloric effects have been experimentally studied in ferroelectrics and incipient
ferroelectrics, but not incipient ferroelectrics driven ferroelectric using strain. Here we use …
ferroelectrics, but not incipient ferroelectrics driven ferroelectric using strain. Here we use …
Electric-field-induced phase transition and electrocaloric effect in PMN-PT
HH Wu, RE Cohen - Physical Review B, 2017 - APS
Ferroelectric perovskite oxides possess a large electrocaloric (EC) effect, but usually at high
temperatures near the ferroelectric/paraelectric phase transition temperature, which limits …
temperatures near the ferroelectric/paraelectric phase transition temperature, which limits …
Cooling efficiency and losses in electrocaloric materials
A figure of merit for assessing the cooling efficiency of electrocaloric (EC) materials is
defined, where the caloric properties are taken into account jointly with the material's losses …
defined, where the caloric properties are taken into account jointly with the material's losses …
Direct electrocaloric measurement of 0.9 Pb (Mg1/3Nb2/3) O3-0.1 PbTiO3 films using scanning thermal microscopy
S Crossley, T Usui, B Nair, S Kar-Narayan… - Applied Physics …, 2016 - pubs.aip.org
We show that scanning thermal microscopy can measure reversible electrocaloric (EC)
effects in< 40 μm-thick ceramic films of the relaxor ferroelectric 0.9 Pb (Mg 1/3 Nb 2/3) O 3 …
effects in< 40 μm-thick ceramic films of the relaxor ferroelectric 0.9 Pb (Mg 1/3 Nb 2/3) O 3 …
Enhancement of the electrocaloric effect over a wide temperature range in PLZT ceramics by doping with Gd3+ and Sn4+ ions
The electrocaloric effect (ECE) in gadolinium and tin ions doped lead lanthanum zirconate
titanate ceramics was investigated. Five samples with different compositions and hence …
titanate ceramics was investigated. Five samples with different compositions and hence …
[HTML][HTML] The electrocaloric effect of lead-free Ba1− yCayTi1− xHfxO3 from direct and indirect measurements
We report on the dielectric and electrocaloric properties of Ba 1− y Ca y Ti 1− x Hf x O 3 for
compositions 0.12< x< 0.18 and y= 0.06, as well as x= 0.15 and 0< y< 0.15, synthesized by …
compositions 0.12< x< 0.18 and y= 0.06, as well as x= 0.15 and 0< y< 0.15, synthesized by …
Machine-Learning-Enabled Prediction of Adiabatic Temperature Change in Lead-Free BaTiO3-Based Electrocaloric Ceramics
In this paper, we develop a data-driven machine learning (ML) approach to predict the
adiabatic temperature change (Δ T) in BaTiO3-based ceramics as a function of chemical …
adiabatic temperature change (Δ T) in BaTiO3-based ceramics as a function of chemical …
Electrocaloric effects in the lead-free relaxor ferroelectric from atomistic simulations
Z Jiang, S Prokhorenko, S Prosandeev, Y Nahas… - Physical Review B, 2017 - APS
Atomistic effective Hamiltonian simulations are used to investigate electrocaloric (EC) effects
in the lead-free Ba (Zr 0.5 Ti 0.5) O 3 (BZT) relaxor ferroelectric. We find that the EC …
in the lead-free Ba (Zr 0.5 Ti 0.5) O 3 (BZT) relaxor ferroelectric. We find that the EC …