Personne
Piyush Agrawal
Publications associées (4)
Electronic structure of pristine and Ni-substituted LaFeO3 from near edge x-ray absorption fine structure experiments and first-principles simulations
Nicola Marzari, Iurii Timrov, Artur Braun, Matteo Cococcioni, Xinyu Zhang, Daniele Passerone, Piyush Agrawal
We present a joint theoretical and experimental study of the oxygen K-edge spectra for LaFeO3 and homovalent Ni-substituted LaFeO3 (LaFe0.75Ni0.25O3), using first-principles simulations based on density-functional theory with extended Hubbard functionals a ...
AMER PHYSICAL SOC2020Structure and properties of edge dislocations in BiFeO3
Cécile Hébert, Daniele Passerone, Rolf Erni, Piyush Agrawal
Edge dislocations are frequently found in epitaxial BiFeO3 multiferroic thin films and are expected to exhibit distinctive and localized magnetoelectric properties. However, an exhaustive characterization of these dislocations at the atomic level has to da ...
AMER PHYSICAL SOC2019Characterization at the Atomistic Level of Defective Structures in Complex Materials
Defects are key to enhance or deploy particular materials properties. In this thesis I present analyses of the impact of defects on the electronic structure of materials using combined experimental and theoretical Electron energy loss spectroscopy (EELS) i ...
EPFL2017Direct Evidence of Surface Reduction in Monoclinic BiVO4
Cécile Hébert, Daniele Passerone, Rolf Erni, Piyush Agrawal
Local measurements of the oxidation state of vanadium in monoclinic BiVO4 particles by means of electron energy-loss spectroscopy in scanning transmission electron microscopy reveal a pronounced surface reduction: within a 5-nm-thick shell, the oxidation s ...
Amer Chemical Soc2015