AlMgCu alloy samples with 70 wt.% Al and varying Cu Mg compositions have been fabricated. The fabricated were characterized by x-ray diffraction measurement the patterns obtained. also subjected to hardness tensile tests determine mechanical properties. A study of was done average crystallite size internal strains using Scherrer’s formula Williamson–Hall analysis, assuming uniform deformation m...

Zn0.98-xMg0.02BxO nanoparticles with various dopant ratios (x = 0.00 - 0.05 increments of 0.01) were grown by using the sol-gel technique. The samples synthesized and X-ray diffraction, scanning electron microscopy, optical reflectivity, dispersive analyses used to obtain structural, electronic, properties, respectively. Williamson–Hall procedure was utilized structural properties. energy bandg...

We employ tools from the fields of symbolic computation and satisfiability checking— namely, computer algebra systems and SAT solvers—to study the Williamson conjecture from combinatorial design theory and increase the bounds to which Williamson matrices have been enumerated. In particular, we completely enumerate all Williamson matrices of even order up to and including 70 which gives us deepe...

Background: Mn-Zn ferrites have drawn a continuously an increasing interest because of their potential applications as multifunctional devices. These materials simultaneously exhibit ferroelectricity and ferromagnetism. The dielectric and leakage current properties of Cobalt substituted Mn-Zn ferrites coated with oleic acid were not reported. Methods: This paper presents the synthesis, electric...

scanning hall probe microscopy (shpm) is a scanning probe microscopy technique developed to observe and image magnetic fields locally. this method is based on application of the hall effect, supplied by a micro hall probe attached to the end of cantilever as a sensor.  shpm provides direct quantitative information on the magnetic state of a material and can also image magnetic induction under a...

In the Goemans-Williamson semidefinite relaxation of MAX-CUT, the gradient of the dual barrier objective function has a term of the form diag(Z), where Z is the slack matrix. The purpose of this note is to show that this term can be computed in time and space proportional to the time and space for computing a sparse Cholesky factor of Z using an algorithm due to Erisman and Tinney. The algorith...

In this study, three samples of GaN/AlInN/AlN/Al2O3 high electron mobility (HEMT) structures are investigated with resolution X-ray diffraction (HR-XRD) technique. Peak positions and peak broadenings used in calculations, gained from rocking curves. Structural quality is determined symmetric asymmetric planes. Mosaic defects such as treadening dilocations (TDs), tilt twist angles, lateral verti...