66 citations · 79 across the 8 of their papers we have counts for
8 papers
An underdog story: Re-emergence of a polar instability at high pressure in KNbO3
Mohamad Baker Shoker, Sitaram Ramakrishnan, Boris Croes +12
Ferroelectricity in perovskites is known to be suppressed by a moderate hydrostatic pressure. The notion that a polar instability should reappear in a higher pressure regime is wel…
Band gap tuning by structural phase transition in Sm-substituted BiFeO3 powders
Christina Hill, Michele Melchiorre, Cosme Milesi-Brault +6
The substitution of bismuth by samarium in BiFeO3 is known to induce a structural phase transition from the polar phase to a non-polar phase, with a possible antiferroelectric inte…
Tunable electrocaloric effect in lead scandium tantalate through calcium doping
Youri Nouchokgwe, Natalya S. Fedorova, Pranab Biswas +11
State-of-the-art electrocaloric cooling prototypes rely on the conventional electrocaloric effect of ferroelectric lead scandium tantalate (PbSc0.5Ta0.5O3, PST), which peaks near r…
Raman resonances mediated by excitonic polarons in BiVO
Georgy Gordeev, Christina Hill, Angelina Gudima +2
Excitonic polarons are quasiparticles formed by a Coulomb-bound electron-hole pair with strong coupling to lattice vibrations. Despite high fundamental interest in excitonic polaro…
Lattice-dynamics and in-plane antiferromagnetism in MnxZn1_xPS3 across the entire composition range
Robert Oliva, Esther Ritov, Faris Horani +5
Alloyed MnxZn1_xPS3 samples have been grown covering the whole compositional range and studied by means of Raman spectroscopy at temperatures covering from 4K up to 850K. Our resul…
Raman signatures of ferroic domain walls captured by principal component analysis
Guillaume F. Nataf, Nick Barrett, Jens Kreisel +1
Ferroic domain walls are currently investigated by several state-of-the art techniques in order to get a better understanding of their distinct, functional properties. Here, Princi…
Multiple strain-induced phase transitions in LaNiO3 thin films
M. C. Weber, M. Guennou, N. Dix +9
Strain effects on epitaxial thin films of LaNiO3 grown on different single crystalline substrates are studied by Raman scattering and first-principles simulation. New Raman modes,…
Structural and insulator-to-metal phase transition at 50 GPa in GdMnO3
J. Agostinho Moreira, A. Almeida, J. Oliveira +6
We present a study of the effect of very high pressure on the orthorhombic perovskite GdMnO3 by Raman spectroscopy and synchrotron x-ray diffraction up to 53.2 GPa. The experimenta…