114 citations · 290 across the 13 of their papers we have counts for
13 papers · 1 filter
Beyond lead halide perovskites: visible light photovoltaics with phase engineered bismuth-based oxide double-perovskites, Bi2MCrO6 (M = Fe, Mn)
N P Vikas, Ranjit K Pradhan, Somdutta Mukherjee +4
Lead poisoning and notorious ambient instability in lead-based halide perovskites pave the way for the exploration of alternative materials for affordable and efficient solar cell…
Understanding the phase stability in multi-principal-component AlCuFeMn alloy
Palash Swarnakar, M. Ghosh, B. Mahato +2
Method(s) that can reliably predict phase evolution across thermodynamic parameter space, especially in complex systems are of critical significance in academia as well as in the m…
Room-temperature surface multiferroicity in YNiMnO nanorods
Shubhankar Mishra, Amritendu Roy, Aditi Sahoo +5
We report observation of surface-defect-induced room temperature multiferroicity - surface ferromagnetism ( at 50 kOe 0.005 emu/g), ferroelectricity ( 2 nC/cm…
Structural and electromechanical characterization of lead magnesium niobate-lead titanate (PMN-0.3PT) piezoceramic for energy harvesting applications
Abhishek Kumar, Amritendu Roy
Efficient mechanical energy harvesting using the principle of piezoelectric effect demands specific material-property requirements. This includes a combination of large piezoelectr…
Phase partitioning in a novel near equi-atomic AlCuFeMn alloy
Amritendu Roy, Mainak Ghosh, Partha Sarathi De
A novel low cost, near equi-atomic alloy comprising of Al, Cu, Fe and Mn is synthesized using arc-melting technique. The cast alloy possesses a dendritic microstructure where the d…
Room temperature multiferroism in polycrystalline thin films of gallium ferrite
Monali Mishra, Amritendu Roy, Ashish Garg +2
Sol-gel deposited (010) textured polycrystalline thin films of gallium ferrite (GaFeO3 or GFO) on n-Si(100) and Pt/Si(111) substrates are characterized for room temperature multife…
Optical Anisotropy in Bismuth Titanate: An Experimental and Theoretical Study
Amritendu Roy, Rajendra Prasad, Sushil Auluck +1
We report experimental and theoretical investigation of anisotropy in optical properties and their origin in the ferroelectric and paraelectric phases of bismuth titanate. Room tem…
Room Temperature Nanoscale Ferroelectricity in Magnetoelectric GaFeO3 Epitaxial Thin Films
Somdutta Mukherjee, Amritendu Roy, Sushil Auluck +3
We demonstrate room temperature ferroelectricity in the epitaxial thin films of magnetoelectric GaFeO3. Piezo-force measurements show a 180o phase shift of piezoresponse upon switc…
Engineering Polarization Rotation in Ferroelectric Bismuth Titanate
Amritendu Roy, Rajendra Prasad, Sushil Auluck +1
Here, we report a combined experimental-theoretical study showing that collective application of rare earth doping on A-site and epitaxial strain to ferroelectric bismuth titanate…
Effect of Site-disorder, Off-stoichiometry and Epitaxial Strain on the Optical Properties of Magnetoelectric Gallium Ferrite
Amritendu Roy, Somdutta Mukherjee, Surajit Sarkar +4
We present a combined experimental-theoretical study demonstrating the role of site disorder, off-stoichiometry and strain on the optical behavior of magnetoelectric gallium ferrit…
First Principle Study of Magnetism and Magneto-structural Coupling in Gallium Ferrite
Amritendu Roy, Rajendra Prasad, Sushil Auluck +1
We report a first-principles study of the magnetic properties, site disorder and magneto-structural coupling in multiferroic gallium ferrite (GFO) using local spin density approxim…
Electronic Structures, Born Effective Charges and Spontaneous Polarization in Magnetoelectric Gallium Ferrite
Amritendu Roy, Somdutta Mukherjee, Rajeev Gupta +3
We present a theoretical study of the structure-property correlation in gallium ferrite, based on the first principles calculations followed by a subsequent comparison with the exp…
First-Principles Calculation of Born Effective Charges and Spontaneous Polarization of Ferroelectric Bismuth Titanate
Amritendu Roy, Rajendra Prasad, Sushil Auluck +1
In this study, we present the results of our first-principles calculations of the band structure, density of states and the Born effective charge tensors for the ferroelectric (gro…