A5012388900- Rare-earth and actinide compounds
- Superconductivity in MgB2 and Alloys
- Iron-based superconductors research
- Boron and Carbon Nanomaterials Research
- Perovskite Materials and Applications
- Heusler alloys: electronic and magnetic properties
- MXene and MAX Phase Materials
- Thermal Expansion and Ionic Conductivity
- Chalcogenide Semiconductor Thin Films
- Solid-state spectroscopy and crystallography
- Ferroelectric and Piezoelectric Materials
- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Multiferroics and related materials
- Intermetallics and Advanced Alloy Properties
- Dielectric properties of ceramics
- High-Temperature Coating Behaviors
- Metal and Thin Film Mechanics
- Superconducting Materials and Applications
- High Entropy Alloys Studies
- 2D Materials and Applications
- High-pressure geophysics and materials
- Magnetic and transport properties of perovskites and related materials
- Quantum Dots Synthesis And Properties
- Microwave Dielectric Ceramics Synthesis
UNSW Sydney
2019-2024
Materials Science & Engineering
2019-2024
Bangladesh University of Engineering and Technology
2017-2022
Bangladesh Agricultural University
2022
Pabna University of Science and Technology
2016-2018
Ministry of Local Government, Rural Development and Co-operatives
2018
Lead (Pb) free metal halide perovskites by atomistic design are of strong interest to photovoltaics and optoelectronics industries because the pressing need resolve Pb-related toxicity instability challenges. In this study, structural, mechanical, electronic, optical properties Pb-free RbSnX
Abstract Perovskite oxides such as PbZr x Ti 1− O 3 (PZT) and BaTiO show excellent dielectric, piezoelectric, pyroelectric, ferroelectric properties simultaneously have been widely used in capacitor, sensor, actuator, motor, surface acoustic wave devices, energy storage applications. Recently, a variety of solution‐processed halide perovskite materials discovered to exhibit fascinating high charge mobility, strong light absorption, even ferroelectricity. In this review, the recent progress...
Non-toxic metal halide perovskites have become forefront for commercialization of the perovskite solar cells and optoelectronic devices. In present study, first time we show that particular doping in CsGeCl3 can considerably enhance absorbance both visible ultraviolet light energy range. We carried out DFT based principles calculations on Mn-doped Ni-doped halide. investigate detailed structural, optical, electronic mechanical properties all doped compositions theoretically. The study...
All-inorganic cubic cesium germanium bromide (CsGeBr3) and tin (CsSnBr3) perovskites have attracted much attention because of their outstanding optoelectronic properties that lead to many modern technological applications. During evolution process, it can be helpful decipher the pressure dependence structural, optical, electronic, mechanical CsXBr3 (X = Ge/Sn) based on ab initio simulations. The lattice parameter unit cell volume been decreased by applying pressure. This study reveals...
Abstract Metal halide perovskites can be readily synthesized, they exhibit tunable physical properties and excellent performance, are heavily studied optoelectronic materials. Compared to the typical three-dimensional perovskites, morphological-level one-dimensional (1D) nanostructures enable charge transport photon propagation with low exciton binding energies long charge-carrier diffusion lengths, while molecular-level 1D good compositional structural flexibilities, highly bandgaps, strong...
This study uses molecular dynamics simulations to explore the mechanical behavior of a CoCrCuFeNi high-entropy alloy (HEA) with Σ5 and Σ13 grain boundaries (GBs) as well without GBs dislocation. The analysis focused on understanding influence mechanisms these HEA. Our findings reveal that atomic size disparity among constituent elements induces lattice distortion, leading deformation in HEAs. determined elastic constants met Born stability requirements, ensuring across both examined GBs....
Metal halides with low‐dimensional molecular structures are the rising stars in horizon of functional materials research. Among them, 1D metal halide hybrids very promising for future optoelectronic applications because their unusual photophysical properties resulting from strong quantum confinement. In past few years, besides lead‐based hybrids, research has been extended to lead‐free organic and all‐inorganic halides. Due near‐unity photoluminescence yield excellent structural stability,...
Recently, lead halide perovskites have gained considerable attention by dint of their predominant physiochemical features and potential use in various applications with an improved power conversion efficiency. Despite the incredible technological research breakthroughs this field, most those compounds present obstacle to future commercialization due instability extreme poisonousness. Because this, it is preferable replace alternative stable elements produce eco-friendly equivalent...
Recently synthesized industrially significant perovskites
Hybrid MAPbBr 3 quantum dot cellulose papers are fabricated via a one-step, oleic acid/oleylamine-free vacuum filtration method, and the corresponding photodetectors demonstrate self-powered capability, high flexibility, exceptional stability.
The effect of pressure on the structural, elastic and electronic properties intermetallic compound MgCu with a CsCl-type structure have been investigated using ab initio technique. optical studied under normal pressure. We carried out plane-wave pseudopotential approach within framework first-principles density functional theory (DFT) implemented CASTEP code. calculated structural parameters show good agreement experimental other theoretical results. most important including bulk modulus...
Dielectric materials with giant dielectric constant are highly demanded for their many high-tech applications. While ferroelectric BaTiO3 inherently possesses polarization within it, high can only be obtained by structural as well chemical modification. In this literature, we report the existence of room temperature permittivity (≥103) in Ba0.95La0.05Ti1−xYxO3 (where x = 0.00–0.15) ceramics prepared pressureless conventional sintering method. Yttrium (Y) has been doped at B site...
Optimum sintering temperature (Ts) plays an important role in controlling densification and growth of grains which greatly affect the magnetic electrical properties polycrystalline materials. Y-substituted Mg-Zn [Mg0.5Zn0.5YxFe2−xO4 (0 ≤ x 0.05)] ferrites have been prepared by using conventional standard ceramic technique were sintered between 1100 1300 °C steps 50 °C. Characterizations samples done X-ray diffraction (XRD) technique, field emission scanning electron microscopy (FESEM),...
By using first principles calculation dependent on the density functional theory (DFT), we have investigated mechanical, structural properties and Debye temperature of Fe 2 ScM (M=P As) compounds under various pressures up to 60 GPa. The optical been zero pressure. Our calculated optimized parameters both materials are in good agreement with other theoretical predictions. elastic constants show that mechanically stable external pressure below From constants, shear modulus G, bulk B, Young’s...
A new Laves phase superconductor NbBe2, prototype with MgCu2, having maximum Tc ∼2.6 K has been reported very recently. Based on first-principle calculations, we systematically study the structural, elastic, mechanical, electronic, thermal and superconducting properties of newly intermetallic compound NbBe2. The Cauchy pressure Pugh’s ratio reveal brittle manner This exhibits metallic conductivity NbBe bonds have ionic feature in which contribution Nb-4d state is dominant near Fermi level....
The structural, elastic, electronic, and optical properties of HgGeB2 (BP, As) are investigated using the plane-wave ultrasoft pseudo-potential technique, which is based on first-principle density functional theory (DFT) with generalized gradient approximation (GGA). calculated structural parameters show a good agreement experimental other theoretical results. optimized lattice parameters, independent elastic constants (C11, C12, C13, C33, C44 C66), bulk modulus B, compressibility K, shear...
Highlighted with improved long-term thermal and environmental stability, all-inorganic metal halide perovskites exhibit tunable physical properties, cost-effective synthesis, satisfactory optoelectronic performance, attracting increasing research interest worldwide. However, a less explored feature of these materials is their strong spin–orbit coupling (SOC), which the hidden force influencing not only band structure but also properties including magnetoresistance, spin lifetime,...
This work summarizes that incorporating rare earth (RE) metal atoms into a ZnO crystal might boost the optical absorption and photoconductivity in visible spectrum of electromagnetic radiation.