2.4k citations · 4.5k across the 59 of their papers we have counts for
6 papers · 2 filters
Polarization rotation and the electrocaloric effect in barium titanate
H. H. Wu, R. E. Cohen
We study the electrocaloric effect in the classic ferroelectric BaTiO3 through a series of phase transitions driven by applied electric field and temperature. We find both negative…
Thermal conductivity and electrical resistivity of solid iron at Earth's core conditions from first-principles
Junqing Xu, Peng Zhang, K. Haule +4
We compute the thermal conductivity and electrical resistivity of solid hcp Fe to pressures and temperatures of Earth's core. We find significant contributions from electron-electr…
Effect of aging and Mn substitution on anisotropy of third generation piezoelectrics
Rajasekarakumar Vadapoo, Muhtar Ahart, Margo Staruch +4
We predict a new candidate high-temperature high-pressure structure of FeSiO with space-group symmetry Cmmm by applying an evolutionary algorithm within DFT+U that we call post…
Electric field induced phase transition and electrocaloric effect in PMN-PT
H. H. Wu, R. E. Cohen
Ferroelectric perovskite oxides possess a large electrocaloric (EC) effect, but usually at high temperatures near the ferroelectric/paraelectric phase transition temperature, which…
Stable Charged Antiparallel Domain Walls in Hyperferroelectrics
Shi Liu, R. E. Cohen
Charge-neutral 180 domain walls that separate domains of antiparallel polarization directions are common structural topological defects in ferroelectrics. In normal ferroel…
Multiscale Simulations of Defect Dipole-Enhanced Electromechanical Coupling at Dilute Defect Concentrations
Shi Liu, R. E. Cohen
The role of defects in solids of mixed ionic-covalent bonds such as ferroelectric oxides is complex. Current understanding of defects on ferroelectric properties at the single-defe…