Table of content

Iraqi Journal of Applied Physics

المجلة العراقية للفيزياء التطبيقية

ISSN: 18132065 23091673
Publisher: iraqi society for alternative and renewable energy sources and techniques
Faculty:
Language: English

This journal is Open Access

About

The Iraqi Journal of Applied Physics (IJAP) is a peer reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, Solid State Physics & Applications, Alternative and Renewable Energy, Computers Networks and Applications.

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Contact info

P. O. Box 55259,
Baghdad 12001,
Iraq
Website: www.iraqiphysicsjournal.com
Email: admin@iraqiphysicsjournal.com
Email: editor_ijap@yahoo.co.uk

Table of content: 2019 volume:15 issue:1

Article
Iraqi Journal of Applied Physics
المجلة العراقية للفيزياء التطبيقية

Authors: Editorial Board
Pages: 1-1
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Abstract

The Iraqi Journal of Applied Physics (IJAP) is a peer-reviewed journal of high quality devoted to the publication of original research papers from applied physics and their broad range of applications. IJAP publishes quality original research papers, comprehensive review articles, survey articles, book reviews, dissertation abstracts in physics and its applications in the broadest sense. It is intended that the journal may act as an interdisciplinary forum for Physics and its applications. Innovative applications and material that brings together diverse areas of Physics are particularly welcome. Review articles in selected areas are published from time to time. It aims to disseminate knowledge; provide a learned reference in the field; and establish channels of communication between academic and research experts, policy makers and executives in industry, commerce and investment institutions. IJAP is a quarterly specialized periodical dedicated to publishing original papers, letters and reviews in: Applied & Nonlinear Optics, Applied Mechanics & Thermodynamics, Digital & Optical Communications, Electronic Materials & Devices, Laser Physics & Applications, Plasma Physics & Applications, Quantum Physics & Spectroscopy, Semiconductors & Optoelectronics, Solid State Physics & Applications, Alternative and Renewable Energy, and Computers and Networks.


Article
Instructions for Authors
تعليمات للمؤلفين

Authors: Editorial Board
Pages: 2-2
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Abstract

CONTRIBUTIONS Contributions to be published in this journal should be original research works, i.e., those not already published or submitted for publication elsewhere, individual papers or letters to editor. Manuscripts should be submitted to the editor at the mailing address: Iraqi Journal of Applied Physics, Editorial Board, P. O. Box 55259, Baghdad 12001, IRAQ Website: www.iraqiphysicsjournal.com Email: editor@iraqiphysicsjournal.com, editor_ijap@yahoo.co.uk


Article
Control of Nonlinear Dynamics in Semiconductor Laser with Optoelectronic Feedback

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Abstract

We report experimentally and numerically the generation of Mixed-Mode Oscillation (MMOs) behavior using semiconductor laser with ac-coupled optoelectronic feedback. The modulation of MMOs using periodic external perturbation has been demonstrated. The MMOs representation has been achieved by winding number as a function of laser bias current. The control of MMOs behavior can be achieved by changing the frequency or amplitude of modulating signal (i.e. periodic external perturbation).


Article
Comparison of Electro-optical Effects in Pure and Cobalt Nanoparticles-Doped 6CHBT Liquid Crystals

Authors: Sudad S. Ahmed
Pages: 5-8
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Abstract

In this work, the electro-optical effects of two types of liquid crystal; pure liquid crystal (LC) and liquid crystal doped with cobalt nanoparticles (LC/Co) were studied. The difference between the two types those been jabbed led to different values of electro-optic properties because of the different susceptibilities of the materials. It was seen that the LC with cobalt nanoparticles was more responsive to the applied electric field owing to the nature of the constituent material (electric material) than the pure LC. The response time of the doped LC is greater than the response time of the pure LC, which makes the doped LC is the best in the optical switching applications.


Article
Preparation of BiFeO3 Films by Sol-Gel Technique and Their Characterization

Authors: Zohra N. Kayani --- Saira Riaz --- Shahzad Naseem
Pages: 9-12
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Abstract

The present paper describes a simple low-temperature synthesis method of preparing bismuth ferrite thin films by sol-gel route, using bismuth nitrates and iron chloride, acetic acid and ethylene glycol. The films were layer by layer deposited on substrate (copper) using the spin-coating technique. The thickness of the layers was controlled by viscosity of the solutions and withdrawing speed parameters. After specific annealing, in air, the samples were characterized by x-ray diffractrometer (XRD), scanning electron microscopy (SEM) and electrical properties measurements. A more thoroughly control of the processing parameters seems to be essential in obtaining BiFeO3 thin films. Solution chemistry variations (differences in precursor type) can have a significant impact on the film properties. Conditions for synthesizing single BiFeO3 phase are critical since the temperature stability range of the phase is very narrow. Moreover, it is also difficult to control oxygen stoichiometry in the sample.


Article
Effect of Calcination on Characteristics of Nickel Ferrite Nanoparticles Synthesized by Sol-Gel Method

Authors: Emerson Pérez --- Gerson Marquez --- Vicente Sagredo
Pages: 13-17
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Abstract

Nanosized nickel ferrite compound was synthesized by using sol-gel method. Significant differences in the particle size were obtained after two different calcination cycles at 873 and 1073 K. The average particle size of sample calcinated at 873K was found to be  25 nm which increases up to 120 nm on calcination at 1073 K. Low-field magnetization data show at room temperature an strong irreversibility between zero field cooled(ZFC) and field cooled(FC) cycles without a clear blocking temperature. The FC data shows a behavior typical for strongly coupled system because of the interaction particle-particle favored by the agglomeration of particles observed by the SEM micrographs. The effective magnetic moment per molecule evaluated from hysteresis loops at magnetic field of 5.5 Tesla is slightly smaller than 2μB.


Article
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Authors: ??????? ?. ??????
Pages: 19-22
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Abstract

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Keywords


Article
Un nuevo enfoque para la producción de nanopartículas de TiO2 dopadas con nitrógeno

Authors: Yana Ruzmanova
Pages: 23-26
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Abstract

En este estudio se sintetizó una nanoestructura de dióxido de titanio dopado con nitrógeno de luz activa visible mediante una simple mezcla de Degussa P25 y polvo de urea y un tratamiento térmico adicional en las condiciones adecuadas. La actividad fotocatalítica de las nanopartículas producidas se verificó proporcionando degradación fotocatalítica de la solución acuosa de fenol. Principalmente este trabajo se centró en la investigación de los siguientes efectos: concentración de urea, tratamiento de temperatura, carga de catalizador y concentración inicial de fenol. También se realizó un estudio de cinética. El enfoque parece tener éxito y se puede aplicar, por ejemplo, durante el tratamiento fotocatalítico de las corrientes de aguas residuales sin o con una ayuda limitada de las lámparas UV.


Article
Efecto del gas de mezcla de argón-oxígeno durante la pulverización magnetrónica en recubrimientos de TiO2

Authors: N. Madaoui
Pages: 27-30
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Abstract

Se usó un método reactivo de pulverización catódica con magnetrón para depositar el revestimiento de dióxido de titanio en sustratos de acero inoxidable sin calentamiento intencional o desviación. El propósito de este trabajo es estudiar el gas de mezcla argón-oxígeno en el comportamiento de corrosión de los recubrimientos de TiO2. La morfología y la estructura de los recubrimientos se estudiaron mediante difracción de rayos X (DRX). Se usó polarización potenciodinámica para estudiar el comportamiento de corrosión de los recubrimientos. Los resultados obtenidos de las curvas de polarización potencodinámicas mostraron que los recubrimientos de TiO2 poseían una mayor resistencia a la corrosión que el sustrato sin recubrir.

Table of content: volume:15 issue:1