Research Interest:
Novel Functional Ferroic Materials:
- Multiferroic materials
- Magnetoelectric memory materials
- Magnetoelectric coupling in BiFeO3-based composites/solid solutions
- Magnetoelectric coupling in doped CoFe2O4 and CoFe2O4-ferroelectric/multiferroic composites
- Low temperature magnetic and transport properties of half metallic LaSrMnO3-based nanocomposites
Multiferroics - Multiferroic materials are those that possess more than one ferroic properties simultaneously that are coupled. Usually broad transitions in dielectric spectra are observed in many of these multiferroic candidates that are reported in literature either as relaxor ferroelectrics with frustrated ferroelectricity or are explained on the basis of Maxwell-Wagner capacitor model that suggests that the observed relaxation and dielectric enhancement may be the artefacts of space charge contributions. The ferromagnetic transition temperature near this broad transition in dielectric spectra confirms the evidance of magnetoelectric coupling. An important issue faced by the researchers in the field is thus to establish the origin of broad transitions usually observed in dielectric spectra.
DMS:
- Magnetic nanoparticles, diluted magnetic semiconductor
Photovoltaics (Perovskite Solar Cells):
- Perovskite Solar Cell for high performance photovoltaic parameters
- Organic-inorganic and purely inorganic Perovskite Solar Cells
First Principal DFT Calculations:
- Electronic structure calculations of solids using density functional theory (DFT) by Wien2K Software
Key Skills:
- XRD for structural investigation
- SEM/TEM for surface morphology and microstructure
- Electronic and Magnetic-transport properties from low temperature to RT
- VSM for magnetization measurement
- P-E loop tracer for P vs E and P vs M measurement
- LCR meter for Magneto-dielectric measurement
- Impedance Analyzer for dielectric, conductivity and impedance spectroscopy measurement
- SCAPS-1D simulation software for inorganic and hybrid (Organic-inorganic) Perovskite Solar Cell heterostructures
Details of Significant Contributions (Main Objectives of Our Research Group):
Till now, we have synthesized and optimized various noval multiferroic materials and study their basic as well as advanced physical properties. Now, efforts have been made to prepare thin films as well as other nanostructures for the various device applications. Apart from it, as we all know that the green energy is the real need of the time of the whole world, we have started work on the lead-free perovskite solar cells (purely inorganic as well as organic-inorganic halide perovskites) and optimized various hetrostructures via computational approch (SCAPS-1D simulation). Now, efforts have been made to make these comutaional simulation in the real experimental work and give a real replacement in solar cells with cost effcetive, green maerial based Solar Pannels to whole world.
Although, other key problems that we want to consider are as follows:
- Room temperature ME coupling in the novel functional materials
- Low leakage and high remenancy
- New exact mechanism for the achievement of ME coupling
- Control and understanding of dynamics on the switching
- Exploration of quantum criticality
- Ultrathin films with robustly coupled FE–magnetic order parameters at room temperature
- Reduction in the voltage near 100 mV for the materials
- Develop a design for FE material, with ultralow power (attojoule) and stable polarization (~1–5 mC/cm2)
- Compatibility with conventional silicon technology processing method need to be addressed for new generation device applications with improving functionalities
- Searching materials of high performance photovoltaic parameters via simulation as well as experimental approaches
- Interested to develope green (lead-free) materials-based Solar Cells to develope environment friendly Solar Pannels with reduced cost