A5005656552- Multiferroics and related materials
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Advanced Photocatalysis Techniques
- Ferroelectric and Piezoelectric Materials
- Magnetic properties of thin films
- Supercapacitor Materials and Fabrication
- Dielectric properties of ceramics
- Magnetic Properties and Synthesis of Ferrites
- Perovskite Materials and Applications
- Copper-based nanomaterials and applications
- Pigment Synthesis and Properties
- Thermal Expansion and Ionic Conductivity
- Electronic and Structural Properties of Oxides
- Gas Sensing Nanomaterials and Sensors
- Nanomaterials for catalytic reactions
- 2D Materials and Applications
- Luminescence Properties of Advanced Materials
- Magnetic Properties and Applications
- ZnO doping and properties
- Anodic Oxide Films and Nanostructures
- TiO2 Photocatalysis and Solar Cells
- Electrocatalysts for Energy Conversion
- Energy and Environment Impacts
- Advanced Electron Microscopy Techniques and Applications
Bangladesh University of Engineering and Technology
2016-2025
Chaitanya Bharathi Institute of Technology
2025
Bangladesh Atomic Energy Commission
2022
Bangladesh Council of Scientific and Industrial Research
2022
University of Dhaka
2022
University of Glasgow
2009-2018
Yamagata University Hospital
2015
Room temperature dielectric and magnetic properties of BiFeO3 samples, co-doped with Gd non-magnetic Ti in place Bi Fe, respectively, were reported. The nominal compositions Bi0.9Gd0.1Fe1–xTixO3 (x = 0.00-0.25) ceramics synthesized by conventional solid state reaction technique. X-ray diffraction patterns revealed that the substitution Fe induces a phase transition from rhombohedral to orthorhombic at x > 0.20. Morphological studies demonstrated average grain size was reduced ∼1.5 μm...
A comprehensive comparison between Bi$_{25}$FeO$_{40}$-reduced graphene oxide(rGO) nanocomposite and BiFeO$_{3}$-rGO has been performed to investigate their photocatalytic abilities in degradation of Rhodamine B dye generation hydrogen by water-splitting. The hydrothermal technique adapted for synthesis the nanocomposites provides a versatile temperature-controlled phase selection perovskite BiFeO$_{3}$ sillenite Bi$_{25}$FeO$_{40}$. Both structured are stable exhibit considerably higher...
We have synthesized MoS$_{2}$ incorporated $\alpha$-Fe$_{2}$O$_{3}$/ZnO nanocomposites by the hydrothermal process. The effect of incorporating ultrasonically exfoliated on photocatalytic performance has been demonstrated. Structural, morphological and optical characteristics nanomaterials are investigated performing Rietveld refinement powder X-ray diffraction patterns, field emission scanning electron microscopy UV-visible spectroscopy. photoluminescence spectra show that recombination...
In this investigation, we have synthesized thermally stable cubic CsSnCl$_{3}$ perovskite nanocrystals (crystal size ~300 nm) with better surface morphology by the hot-injection technique. Excellent crystalline quality of these was confirmed high-resolution transmission electron microscopy imaging. The binding organic ligands on sample characterized nuclear magnetic resonance spectroscopy. UV-visible spectroscopy ensured that a direct bandgap ~2.98 eV which steady-state photoluminescence...
The increasing demand for advanced materials with multifunctional magnetic properties has sparked growing interest in rare-earth and transition metal-based double perovskites. In this study, we comprehensively investigate disordered Y 2 CoCrO 6 (YCCO),...
This study investigates the electronic structure, optical properties, and photocatalytic potential of Gd 2 CoCrO 6 , revealing its half-metallic, n-type semiconducting behavior suitability for solar-driven applications through theory experiments.
Multiferroic BiFeO<sub>3</sub>nanoparticles were synthesized using low temperature hydrothermal technique to assess their visible-light driven photocatalytic activity along with applicability for the production of hydrogen via water splitting.
We have investigated the effects of temperature on magnetic properties Bi0.9Gd0.1Fe1−xTixO3 (x = 0.00–0.20) multiferroic system. Unexpectedly, coercive fields (Hc) this system increased with increasing temperature. The and remanent magnetization were higher over a wide range temperatures in sample x 0.10, i.e. composition Bi0.9Gd0.1Fe0.9Ti0.1O3 than those 0.00 0.20 compositions. Therefore, we carried out temperature-dependent experiments extensively for 0.10. hysteresis loops at different...
Improvement in magnetic and electrical properties of multiferroic BiFeO3 conjunction with their dependence on particle size is crucial due to its potential applications multifunctional miniaturized devices. In this investigation, we report a study dependent structural, sol-gel derived Bi0.9Ba0.1FeO3 nanoparticles different sizes ranging from ∼ 12 49 nm. The substitution Bi by Ba significantly suppresses oxygen vacancies, reduces leakage current density Fe2+ state. An improvement both...
Hydrothermal incorporation of an MoS 2 nanosheet onto ternary metal sulfide enhances the specific capacitance resulting in asymmetric supercapacitor (CuCo S 4 –MoS //AC) with ultra-high energy density and power as well wide potential window.
Abstract In this investigation, nanoparticles of B-site disordered Y 2 NiCrO 6 (YNCO) double perovskite were synthesized by the facile sol–gel method to evaluate their magnetic and electrochemical properties. Their crystallographic structure is monoclinic average size particles 79±16 nm. XPS analysis indicated a mixed oxidation states transition metals Ni 2+ /Ni 3+ Cr /Cr . The valence Cr, along with phases YNCO, constitute signature disorder. This antisite disorder contributed observation...
Illustration of the photocatalytic degradation mechanism pollutants by DyFeO 3 under solar irradiation, emphasizing enhanced apparent quantum yield and reduction in activation energy facilitated .
We have synthesized Gd2FeCrO6 (GFCO) double perovskite which crystallized in monoclinic structure with P21/n space group. The UV–visible and photoluminescence spectroscopic analyses confirmed its direct band gap semiconducting nature. Here, by employing experimentally obtained structural parameters first-principles calculation, we reported the spin-polarized electronic structure, charge carrier effective masses, density of states, distribution optical absorption property GFCO perovskite....
Sillenite-type members of the bismuth ferrite family have demonstrated outstanding potential as novel photocatalysts in environmental remediation such organic pollutant degradation. This investigation has developed a low temperature one-step hydrothermal technique to fabricate sillenite Bi25FeO40 (S-BFO) via co-substitution 10% Gd and Cr Bi Fe sites BiFeO3, respectively, by tuning reaction temperatures. Rietveld refined X-ray diffraction patterns as-synthesized powder materials revealed...
Aqueous supercapacitors (SCs) encounter limitations in operational voltage and energy density due to the low decomposition of water. Here, we fabricate aqueous symmetric (ASSCs) employing DyFeO3 as an electrode material. This hybrid SC a 0.5 M Na2SO4 electrolyte exhibits significantly high working 2.5 V, with 41.81 W h kg-1 at power 1250 kg-1, maintaining 94% capacitance retention after 5000 cycles. By incorporating 20% volume acetonitrile water electrolyte, extend potential window 3.1 84.43...