U. Waghmare

activity

19972005

most citedFirst-principles study of spontaneous polarization in multiferroic BiFeO

_{3}

1.4k citations · 1.4k across the 4 of their papers we have counts for

collaborators

Showing cond-mat.mtrl-sciShow all

5 papers · 1 filter

cond-mat.mtrl-sci2005

Localized Orbital Description of Electronic Structure

Joydeep Bhattacharjee, Umesh V Waghmare

We present a simple and general method for construction of localized orbitals to describe electronic structure of extended periodic metals and insulators as well as confined system…

cond-mat.mtrl-sci2005

The Nature of Vibrations of a 2-D Disordered Lattice Model with Nano-scale Order

Prasenjit Ghosh, Umesh V. Waghmare

Motivated by the unusual soft mode anomalies in the relaxor ferroelectrics, we present a numerical study of vibrational excitations of a disordered lattice model with chemical orde…

cond-mat.mtrl-sci2004★ 1.4k cited

First-principles study of spontaneous polarization in multiferroic BiFeO $_{3}$

J. B. Neaton, C. Ederer, U. V. Waghmare +2

The ground-state structural and electronic properties of ferroelectric BiFeO $_{3}$ are calculated using density functional theory within the local spin-density approximation and the…

cond-mat.mtrl-sci2002★ 1 cited

Comparative Dielectric Behavior of PbFe $_{1/2}$ Ta $_{1/2}$ O $_{3}$ and NaNbO $_{3}$ :Gd Relaxor-Like Crystals

I. P. Raevski, S. A. Prosandeev, U. Waghmare +3

Experimental data obtained for PbFe $_{1/2}$ Ta $_{1/2}$ O $_{3}$ (PFT) and NaNbO $_{3}$ : Gd (NaNbGd) single crystals show a diffused dielectric permittivity peak that is inherent to…

cond-mat.mtrl-sci1997

Dynamic Local Distortions in Ferroelectrics

H. Krakauer, R. Yu, C. -Z. Wang +2

Molecular-dynamics simulations of KNbO $_{3}$ reveal preformed dynamic chain-like structures, present even in the paraelectric phase, that are related to the softening of phonon branc…