8 research outputs found

    Substrate Temperature Effect on the Optical Properties of ZrO2 Films Prepared by Thermal Evaporation

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    The pure substance of Zirconium oxide  (ZrO2) was deposited on substrate of glass with various substrate temperatures using thermal evaporation under the pressure of (2×10-5 bar) and with a deposition rate of (0.5 nm/S) with an average thickness of (300 nm). The optical properties of these prepared films were concentrated as a function of the substrate temperature. It was found that the values ​​of each of the refractive index, packing density, together with the extinction coefficient increased with the increase in the substrate temperature of the prepared films

    Spherically Symmetric Solutions in M\o ller's Tetrad Theory of Gravitation

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    The general solution of M\o ller's field equations in case of spherical symmetry is derived. The previously obtained solutions are verified as special cases of the general solution.Comment: LaTeX2e with AMS-LaTeX 1.2, 8 page

    On Finslerized Absolute Parallelism spaces

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    The aim of the present paper is to construct and investigate a Finsler structure within the framework of a Generalized Absolute Parallelism space (GAP-space). The Finsler structure is obtained from the vector fields forming the parallelization of the GAP-space. The resulting space, which we refer to as a Finslerized Parallelizable space, combines within its geometric structure the simplicity of GAP-geometry and the richness of Finsler geometry, hence is potentially more suitable for applications and especially for describing physical phenomena. A study of the geometry of the two structures and their interrelation is carried out. Five connections are introduced and their torsion and curvature tensors derived. Some special Finslerized Parallelizable spaces are singled out. One of the main reasons to introduce this new space is that both Absolute Parallelism and Finsler geometries have proved effective in the formulation of physical theories, so it is worthy to try to build a more general geometric structure that would share the benefits of both geometries.Comment: Some references added and others removed, PACS2010, Typos corrected, Amendemrnts and revisions performe

    Energy-Momentum Complex in M\o ller's Tetrad Theory of Gravitation

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    M\o ller's Tetrad Theory of Gravitation is examined with regard to the energy-momentum complex. The energy-momentum complex as well as the superpotential associated with M\o ller's theory are derived. M\o ller's field equations are solved in the case of spherical symmetry. Two different solutions, giving rise to the same metric, are obtained. The energy associated with one solution is found to be twice the energy associated with the other. Some suggestions to get out of this inconsistency are discussed at the end of the paper.Comment: LaTeX2e with AMS-LaTeX 1.2, 13 page

    Study the Structural and Optical Properties of CuO Thin films Prepared by d.c Magnetron Sputtering

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    In this research (CuO) films were prepared  onto glass substrate of glass using plasma magnetron sputtering technique. The results of  XRD showed that the thin films  had a polycrystalline structure with monoclinic lattice unit cell. The roughness of the prepared films were  identified by atomic force microscope (AFM), where the results showed that the roughness increased from (0.386-4.22)nm with increasing the thickness from(95-316)nm. Optical properties of the prepared films of (335-1135) nm showed that the absorption of the films decreased with increasing of wavelength for all thicknesses, optical energy gap for the prepared films decreased from (3.15-2.8)eV with increasing thickness from (95-316)nm.http://dx.doi.org/10.31257/2018/JKP/10020
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