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...

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...

In this study, nano graphene oxide (NGO) was synthesized by modified Hummer's method, the functionalization surface of amino acid (methionine, cysteine) covalent NGO with group using microwave 20% power (140 W) and characterization Fourier transform infrared spectrophotometer (FT-IR), X-ray diffraction spectroscopy (XRD), field emission scanning electronic microscopy (FESEM). The calculated par...

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...

Lanthanum (La) doped Ceria (CeO2) has attracted considerable interest as a candidate material for thermal barrier coating (TBC) because of its low thermal conductivity and potential capability to be operated above 1250°C. In this study, La2Ce2O7 powder was synthesized through the ball mill method. The crystal structure of La3+ su...

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...

the present paper is concerned with  the investigation of disturbances in a homogeneous  transversely isotropic thermoelastic rotating  medium with two temperatures, in the presence of the combined effects of   hall currents and magnetic field due to thermomechanical sources. the formulation is applied to the thermoelasticity theories developed by green-naghdi theories of type-ii and type-iii. ...

Timothy Williamson’s project in Knowledge and Its Limits (Williamson, 2000) includes proposals for substantial revisions in the received approach to epistemology. One received view is that knowledge is conceptualized in terms of a conjunction of factors that are individually necessary and jointly sufficient for knowing. A central aim of epistemology is to state such necessary and sufficient con...