The researcher graduated from the Faculty of Science, Sohag, Assiut University, and received a Bachelor of Science (Physics) in 1991. He was appointed as a demonstrator in physics department in 1992 and joined military service until 1993. In 1999 he received a two-year co-channel of supervision between Egypt and Switzerland, during which he traveled to the United States of America at the University of Wisconsin for two months. He was awarded a doctorate and was appointed as a lecturer in physics department, Faculty of Science, Sohag, South Valley University in 2003. He obtained the rank of Assistant Professor in 2008.He served as assistant professor and associate professor at Najran University in the period from 2007 to 2016, during which he participated in many scientific research activities including teaching, membership and chairmanship of academic committees and publishing many scientific researches through a number of research projects. He received a degree in materials science in 2016.

• Publications
• Courses Tasks

Magnetocaloric Effect, Electric, and Dielectric Properties of Nd0.6Sr0.4MnxCo1-xO3 Composites

2018-10-27 16:03:06 | Keywords Magnetocaloric effect, Dielectric permittivity, Arrott plots, Magnetic phase transition,

The magnetocaloric effect (MCE) and electric-dielectric properties of the Nd-cobaltate perovskitesNd0.6Sr0.4Co1xMnxO3(x = 0, 0.3, 0.7 and 1) were investigated for possible use in magnetic cooling appli-cations. Upon Mn substitution, the magnetic exchange interaction is affected by the (Mn4+/Mn3+) ratio,which in turn impacts several physical properties. The XRD patterns of the synthesized compositesrevealed a single phase with an orthorhombic structure with ... Read more

Structural and Optical Properties of Nanostructured Fe-Doped SnO2

2018-10-29 09:09:54 | Keywords

Nanocrystalline Sn1-xFexO2 (where x = 0, 0.01, 0.02, 0.03 and 0.04) powders have been successfully synthesized by the hydrothermal method followed by sintering at 1000 C for 3 h. The morphology and structure of the samples have been analyzed by field emission scanning electron microscope and X-ray diffraction, respectively. X-ray diffraction results revealed that all diffraction peaks positions agree well ... Read more

Effect of Fe doping on the electrical and magnetic properties of Sn1-xFexO2 nanoparticles

2018-10-29 09:18:04 | Keywords

In this work, Sn1−xFexO2 (x = 0.00, 0.02, 0.04, 0.06 and 0.08) nanoparticles have been synthesized using ball-milling method. The average diameter of the nanoparticles decreases from 487 to 216 nm by adding Fe2O3 to the tin dioxide. The X-ray diffraction analyses confirms formation of tetragonal structure which is typical feature of SnO2 compounds. Theoretical density was found to be ... Read more

Enhancement of the power factor of Pb1-xSnxTe (0.00 ≥ x ≥ 0.08) alloys,

2018-10-29 09:59:09 | Keywords

Thermoelectric properties of Pb1–xSnxTe (0.00 ≥ x ≥ 0.08) alloys synthesized by melting-quenching-annealing method have been investigated. The sample structure and phases have been investigated by Raman spectroscopy and X-ray diffraction, while the morphology and stoichiometry have been studied by SEM and EDX. The nanomaterial exists in a single phase and has a facecentred cubic (fcc) lattice of rock-salt type ... Read more

Growth and opto-electro-structural properties of nanocrystalline PbSe thin films,

2018-10-29 12:30:47 | Keywords

The present work deals with the structural, optical and electrical characterization of PbSe thin films with variable thickness deposited on well-cleaned glass substrates by electron beam evaporation technique at room temperature (RT). Grown films are characterized by X-ray diffraction, energy dispersive spectroscopy, resistivity measurements (from room temperature to 200 °C) and optical measurements at room temperature in order to study ... Read more

Show More Posts

Problems

2018-10-30 18:25:13 | Thermodynamics

Some problmes for this course Read more

Questions bank

2018-10-30 18:16:43 | Electromagnetic Theory

Questions for 4th students of physics in education faculty Read more

Show More Tasks