khalaf.ali

Khalaf Ali Fayez Abuamra

استاذ - أستاذ متفرغ

كلية العلوم

العنوان: قسم النبات والميكروبيولوجى -كلية العلوم -جامعة سوهاج

2

إعجاب

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: Rietveld analysis


2018-10-31 01:01:43 الكلمات المفتاحية Rietveld analysis, Composite material, Electron microscopy, Electrical characterization, Magnetometer,
Synthesis, characterization and low field magnetotransport of Nd0.6Sr0.4MnO3/CrO3composite
Abstract:(Nd0.6Sr0.4MnO3)1-x/(CrO3)xwith x=0.0–0.030 step 0.005 weight% composites have been prepared by the solid state reaction process. The X-ray and scanning electron microscopic manifest that all composites are a single orthorhombic phase and there are no CrO3 grains separated from NdSrMnO matrix. The electrical measurements have revealed an increase of resistivity and a decrease of metal semiconductor transition with increasing CrO3. The ... إقراء المزيد

2018-09-11 14:58:39 الكلمات المفتاحية XRD, SEM, TEM, Nano structures, Chemical synthesis, EDAX, Rietveld analysis, Magnetometer,
Effect of chromium substitution on the structural and magnetic properties of nanocrystalline zinc ferrite
Single-phase Cr doped zinc ferrites have been synthesized by hydrothermal method. The crystal structure, microstructure, crystallite size and distribution, composition and magnetic properties of the synthesized nanoparticles were determined using X-ray powder diffraction, electron microscopies and vibrating sample magnetometry. Powders are composed of ultrafine spherical nanoparticles with a highly homogeneous elemental composition. The nanoparticles have partially inversed cubic spinel structure ... إقراء المزيد