No abstract

No abstract

The present work is an experimental study and interested in hexaferrite samples preparation of the system Ba0.2Sr0.8Fe12O19 nanoparticle powder by chemical coprecipitation method used to prepare fine nanoparticles. The structural properties of this system have been investigated using scanning electron microscopy-Energy dispersive X-Ray spectroscopy (SEM-EDS) and were found the average grain size to be (33.685)nm. Magnetic properties were calculated by vibrating sample magnetometry (VSM), it was the results proved that the saturation magnetization reaches to (85.633)emu/gr and the residual magnetization is (39.342)emu/gr. The coercivity of (4665.909)Oe is also observed. The hysteresis loop was studied and shown that, this system of hard ferrite materials.

This Include search the preparation of a new ligand from heterogeneous azo organic derivatives derived from Thiazolyl ligand (5-MeTAQ) and the identification of ligand (5-MeTAQ) were identification and analyzed by using 1H-NMR, mass spectrum, XRD SEM and EDX. Thin films of ligand dye prepared of concentration of (0.05,0.1,0.3) M membrane pure and doped of 10% hexaferrite (SrFe12O19) of concentration (0.05M) was prepared of thin films with thikness (1000 ±15) nm the preparation of membranes by method spray pyrolysis. The study of optical properties of thin films pure and doped study spectral of absorbance and transmittance within the wavelength (200-800)nm the Results shows of the transmittance decrease of the molar concentration Increase and doped and the absorbance increase with increase molar concentration and doped and energy band gap decrease with increase molar concentration and doping the study of structure properties of the Thin films prepared through(XRD) where the results show membranes multiple crystallization and preferred trend of growth is (101) particle.

Thin nanoparticles of zinc oxide were prepared using sol-gel. "The samples were prepared nano thin film (71 nm), various weight ratios were added from the MWCNT to the colloidal solution and at a rate of" "(0.423, 0.921, 1.624%). These solutions were deposited by using the spin coating technique on the glass substrate and interdigitated finger electrode. For the purpose of knowing the sensitivity and the extent of response of these samples to detect the different vapors of some toxic gases (ethanol, methanol, acetone and nitrogen). Nano thin film were prepared by using spin coting technique. The synthetic properties of these membranes were studied using X-ray diffraction.