A5081802895- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetic Properties and Synthesis of Ferrites
- Multiferroics and related materials
- Chalcogenide Semiconductor Thin Films
- Synthesis and biological activity
- Crystal structures of chemical compounds
- Magneto-Optical Properties and Applications
- Crystallography and molecular interactions
- Crystal Structures and Properties
- Synthesis and Reactions of Organic Compounds
- Synthesis of Organic Compounds
- ZnO doping and properties
- Magnetic and transport properties of perovskites and related materials
- Electromagnetic wave absorption materials
- Semiconductor materials and interfaces
- Advanced Semiconductor Detectors and Materials
- Polymer Synthesis and Characterization
- Ferroelectric and Piezoelectric Materials
- Transition Metal Oxide Nanomaterials
- Advanced Condensed Matter Physics
- Organic Chemistry Cycloaddition Reactions
- Chemical Synthesis and Characterization
- Synthesis and Reactivity of Heterocycles
- Synthesis and Biological Evaluation
National Research Centre
2015-2025
Academy of Scientific Research and Technology
2022
Tokyo Institute of Technology
2011
Beni-Suef University
2008
Max Planck Institute for Solid State Research
2007
The effect of nano-scale size in the magnetic semiconductor rare Earth ferrite system, ErFeO 3 , has been studied. orthorhombic crystal structure was found for prepared by sol-gel method to be 8 nm. Fe-O stretching vibration identified IR band at around 561 cm −1 whereas O-Fe-O deformation about 437 . semiconducting behavior found, and its energy gap equals 1.75 eV. As frequency increases, charge transport mechanism showed transition from small polaron model, dominated thermally activated...
QSAR study describes the anti-neoplastic spiro-alkaloids with relevant molecular descriptors using CODESSA III software. The dispiro[3H-indole-3,2'-pyrrolidine-3',3"-piperidines] 24-48 were synthesized via [3 + 2]-cycloaddition reaction of azomethine ylides, (generated in situ decarboxylative condensation isatins 21-23 sarcosine) and 3E,5E-1-alkyl-3,5-bis(arylmethylidene)-4-piperidones 10-20. Some analogues exhibited promising antitumor properties against HELA (cervical), HEPG2 (liver),...
A thin film of Gd3+ doped Mn–Cr ferrite the chemical formula MnCr0.5Gd0.02Fe1.48O4 was prepared by pulsed laser deposition from bulk sample at room temperature. The optical absorption, transmission and reflection spectra were measured discussed in wavelength range 300 to 2500 nm. parameters calculated following single oscillator model. band gap found be 2.75 eV, dispersive energy electric dipoles estimated using Wemple–Di Domenico relation 6.395 while oscillating dipole is 4.997 eV....
In the title mol-ecule, C(27)H(24)N(2)O(2), pyrrolidin-2-one ring is almost planar (r.m.s. deviation = 0.003 Å), pyrrolidine has an envelope conformation (the N atom flap atom) and cyclo-penta-none twisted about C(q)-C(m) bond (q quaternary m methylene). The ketone O atoms are directed to opposite sides of mol-ecule. Supra-molecular chains along a axis formed in crystal packing mediated by N-H⋯N C-H⋯O inter-actions. These connected into layers ab plane via C-H⋯π
Abstract A series of Mg doped ZCFAO (Zn 0.3−x x Cu 0.7 Al 0.3 Fe 1.7 O 4 (0.05 ≤ 0.25) spinel samples were synthesized by solid state reaction method. XRD, was utilized to investigate the structure phase, microstructural characteristics, The optical properties analyzed; Biological instruments Sp-150 potentiostate is employed dielectric measurements in frequency range 10 Hz 1 MHz at various temperatures from 300 650 K. Vibrating sample magnetometer VSM examine magnetic characteristics applied...
Abstract Paper sludge generated from recycling of printed paper is a negative value waste since cellulosic fibers in the are too damaged to be used making and, more important, has very high content ash (up ~ 35%) and ink residues. To able utilize bio-conversion industries which depend on saccharification into sugars, de-ashing necessary. The major component fillers making, especially calcium carbonate. In current work, high-purity formate was prepared utilizing carbonate — as zero-value...
The effects of Molybdenum (Mo) doping on the structural, optical, and electrical properties alumina α -Al 2−x Mo x O 3 , (x = 0.02–0.14) synthesized via solid-state reaction method have been studied. X-ray diffraction (XRD) analysis confirms single-phase hexagonal corundum structure in range 0.06–0.14. influence structural parameters was estimated from XRD data by applying Rietveld profile fitting Fourier-transform infrared spectroscopy. results revealed that replacing Al with does not...
A series of ferrite samples the chemical composition Cu0.7 (Zn0.3-xMgx)Al0.3Fe1.7O4 [x=0.05, 0.1, 0.15 and 0.2], prepared by ceramic technique at 1000°C, were found to have cubic spinel structure. On applying full pattern fitting Rietveld method using FullProf program, exact coordinates atoms, unit cell dimensions, atom occupation factors, isotropic temperature profile shape parameters as well interatomic distances been determined. It was that lattice parameter decreases with increasing Mg...
Abstract The influence of the Cu‐content in quaternary compounds Cu x Ag 1‐ InTe 2 (0 ≤ ≤1) on structural properties bulk material was discussed. Bulk ingot materials solid solutions ( = 0.0, 0.25, 0.50, 0.75 and 1.0) have been synthesized by fusion constituent elements stoichiometric ratios vacuum‐sealed silica tubes. compositions were confirmed using energy dispersive analysis X‐rays (EDAX). X‐ray powder diffraction measurements performed for all prepared samples at 300 K step scanning...
The racemic title compound, C30H26Cl3N3O2, comprises two spiro links, the first connecting piperidine and pyrrolidine rings other indole rings. ring adopts a half-chair conformation, while has an envelope conformation with unsubstituted C atom as flap. dihedral angles between p-Cl-substituted benzene are 33.13 (14) 54.11 (14)°. In crystal, mol-ecules form inversion dimers through pairs of N-H⋯O hydrogen bonds [graph set R 2 (2)(8)]. Aromatic C-H⋯O extend these into ribbon structure,...