Browsing School of Materials Engineering (Articles) by Author "yarub@unimap.edu.my"
Now showing items 1-9 of 9
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Density functional study of optical properties of beryllium chalcogenides compounds in nickel arsenide B8 structure
Yarub, Al - Douri; Baaziz, H.; Charifi, Z.; Ali Hussain, Reshak, Prof. Dr. (Elsevier B.V., 2012-02-01)The structural, electronic and optical properties of beryllium chalcogenides BeS, BeSe and BeTe using the full-potential linear augmented plane wave (FP-LAPW) method are investigated. The exchangecorrelation energy within ... -
Effect of roughness of hypo-and hyper-eutectic Al-Si piston alloy on wear characteristics under lubrication
Riyadh A., Al-Samarai; Haftirman, Dr.; Khairel Rafezi, Ahmad, Dr.; Yarub, Al-Douri, Assoc. Prof. Dr. (Elsevier B.V., 2013)The tribological behavior of tow Al-Si alloys under the influence of surface roughness average was investigated for the present study. The silicon content of these alloys ranged 10 and 16-wt% Si, and includes hypoeutectic ... -
Electronic and optical properties of (Al xGa 1-x) 1-yMn yAs single crystal: A new candidate for integrated optical isolators and spintronics
Merabet, Boualem; Yarub, Al-Douri, Prof. Dr.; Abid, Hamza; Ali Hussain, Reshak, Prof. Dr. (Springer Science+Business Media, LLC, 2013-01)We have explored the electronic and optical properties of cubic (Al x Ga1-x )1-y Mn y As system using the FP-LAPW method. The unit cell has 64 atoms, so that one manganese (Mn) atom is placed in the position of gallium ... -
Evaluate the effects of various surface roughness on the tribological characteristics under dry and lubricated conditions for Al-Si alloy
Riyadh A., Al-Samarai; Haftirman, Dr.; Khairel Rafezi, Ahmad, Dr.; Yarub, Al-Douri, Assoc. Prof. Dr. (Scientific Research Publishing Inc. All rights reserved., 2012-07)The effect of surface roughness average of hypereutectic aluminum silicon alloys (with 16 wt% Si) on the friction and wear was investigated. Various surface roughness average (Ra) of different degrees was verified as well ... -
Investigated stiffness of high performance superconductivity with nanoceria incorporated into polycrystalline magnesium diboride
Yarub, Al - Douri; Ghairabeh, M.; Albiss, B. A.; Ali Hussain, Reshak, Prof. Dr. (The Institution of Engineering and Technology, 2012-08)Polycrystalline MgB 2 was prepared with different amounts of nano-sized CeO 2 inclusions, subjected to X-ray diffraction, scanning electron microscopy and atomic force microscopy characterisation. The nano-CeO 2 inclusions ... -
Morphology, analysis and properties studies of CdS nanostructures under thiourea concentration effect for photovoltaic applications
Yarub, Al-Douri, Assoc. Prof. Dr.; Jamal H., Waheb; Mohammed Ameri; Khenata, R.; Abdelmadjid, Bouhemadou; Ali Hussain, Reshak, Prof. Dr. (Electrochemical Science Group, 2013-08)CdS nanostructures are prepared by sol-gel spin coating method using different thiourea concentrations. The thiourea concentration effect for CdS nanostructures deposited on quartz substrate is studied. The CdS nanostructures ... -
Optoelectronic properties of GaAs and AlAs under temperature effect
Yarub, Al-Douri, Assoc. Prof. Dr.; Ali Hussain, Reshak, Prof. Dr.; Uda, Hashim, Prof. Dr. (Elsevier GmbH, 2013-08)An application study of optoelectronic properties as a function of the temperature for GaAs and AlAs according to our model has been presented using empirical pseudopotential method (EPM). The structural phase transition ... -
Structural and electronic properties of GaN x As 1-x alloys
Baaziz, H.; Charifi, Z.; Ali Hussain, Reshak, Prof. Dr.; Hamad, Bothina A.; Yarub, Al-Douri (Springer-Verlag., 2012-03)The structural and electronic properties of cubic GaN x As 1-x with N-concentration varying between 0.0 and 1.0 with step of 0.25 were investigated using the full potential-linearized augmented plane wave (FP-LAPW) method. ... -
Tribological properties of WS2 nanoparticles lubricants on aluminum-silicon alloy and carbon steels
Riyadh A., Al-Samarai; Yarub, Al-Douri, Assoc. Prof. Dr.; Haftirman, Dr.; Khairel Rafezi, Ahmad, Dr. (Walailak University, 2013-06)The rheological properties of nanometric tungsten disulphide (WS2) nanoparticles oil lubricants and its tribological performance with two hypereutectic Al-Si alloy and carbon steel are examined. These two oils are used to ...