Browsing International Journal of Nanoelectronics and Materials (IJNeaM) by Issue Date
Now showing items 21-40 of 527
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X-ray and dielectric studies of ferroelectric phase in the Ba1-x(Yb0.5 Na0.5)x TiO3 system for low doping level
(Universiti Malaysia Perlis, 2009)Ceramics of solid solution Ba1-x(Yb0.5Na0.5)xTiO3 were sintered in the temperature range 1220-1400°C. Dielectric properties of ceramics belonging to the whole composition domain were investigated in a broad range of ... -
Influence of rapid thermal oxidation process on the optoelectronic characteristics of PSI devices
(Universiti Malaysia Perlis, 2009)The morphological properties of the freshly and oxidized porous silicon at oxidation time (60, 90) sec were studied. Eyes, can see a blue emission from PSi after thermal oxidation, we can obvious increasing energy gab, ... -
Modelling of the film thickness effecton the carrier's mobility in polysilicon thin film transistors
(Universiti Malaysia Perlis, 2009)The transfer characteristics modelisation of the Mosfet's structure allows us to simulate the doping effect, the grains size, the layer thickness as well as others parameters of the transistor. The purpose of this work is ... -
Electronic and positronic studies of zinc-blend boron phosphide BP underpressure
(Universiti Malaysia Perlis, 2009)We analyze the effect of the pressure variations on the electron and the positron distributions in the boron phosphide. On the basis of the pseudopotential band structure calculations (EPM) and the independent particle ... -
Nanotechnology development status in Malaysia: industrialization strategy and practices
(Universiti Malaysia Perlis, 2009)Malaysia has started it own micro-technology and nano-technology development since the early millennium year of 2000 and arise until this day. Some key plans have proven effective and others fairly not. Status about ... -
Studying the different effects of gamma and x-ray irradiation on the electrical properties of silicon diode type 1N1405
(Universiti Malaysia Perlis, 2009)The silicon diode types 1N1405 subjected to different types of radiation like (x-ray and y-radiation), it is measured by the foward and reverse bias voltage before and after irradiation, so this research study the different ... -
Estimation of thermal contact resistance in metal-plastic interface of semiconducting electronic devices
(Universiti Malaysia Perlis, 2009)For decade, thermal contact resistance (TCR) has been measured experimentally. Unfortunately, the database, which should regularly support decision-making on TCR coefficients, seems not to exist. Thus, companies result to ... -
2D-modeling for the simulation of current-voltage characteristics in polysilicon schottky diode deposited by LPCVD and SAPCVD methods
(Universiti Malaysia Perlis, 2009)The aim of this work is to compare the quality of the Schottky contact obtained between Silver and the un-doped polysilicon layer deposited on glass substrate (Corning 1737) by using two techniques: Lower Pressure Chemical ... -
First-principles calculations of the structural and electronic properties of AIN, GaN, InN, AIGaN and InGaN
(Universiti Malaysia Perlis, 2009)First principles calculations are carried out for A1N, GaN, InN, A1Gan and InGaN in various crystal structures. The computational method used to investigate the structural and the electronic properties is the full potential ... -
Investigation of Al₃Ti₀.₅V₀.₅ Alloy
(Universiti Malaysia Perlis, 2010)The FP-LAPW method is employed and the gradient generalized approximation (GGA) is used to treat the exchange-correlation potential. In this study we considered the A₃Ti₀.₅V₀.₅ alloy case. In which we investigated the ... -
Investigation of low frequency dependence of output conductance in GaAs MESFET
(Universiti Malaysia Perlis, 2010)In this work, we experimentally investigate the effects of the extension of depletion regions in a GaAs MESFET on the frequency variation of the output conductance, gd, as well as the maximal relative variation, Δgdmax, ... -
Formation and thermal properties of Fe-based BMG's with Y or Gd addition
(Universiti Malaysia Perlis, 2010)In the present work, the glass formation of Fe ₅₀-ₓ Cr ₁₅ Mo ₁₄ C ₁₅ B ₆ M x (x = 0,2 and M = Y,Gd) alloys has been investigated. Wedge shaped bulk samples, with thickness from 2 mm up to 5 mm, were prepared by copper mold ... -
The dependence of saturation velocity on temperature, charge and electric field in a nanoscale MOSFET
(Universiti Malaysia Perlis, 2010)The intrinsic velocity is shown to be the ultimate limit to the saturation velocity in a very high electric field. The unidirectional intrinsic velocity arises from the fact that randomly oriented velocity vectors in zero ... -
Structural and optical properties of calcium-doped zinc oxide sputtered from nanopowder target materials
(Universiti Malaysia Perlis, 2010)Calcium-doped zinc oxide (ZnO:Ca) thin films were deposited onto glass substrates by rf-magnetron sputtering at ambient temperature using nanocrystalline powder synthesized by the sol-gel method. The structural, electrical ... -
Band structure and optical properties of some quasi-molecular AI₃ (A=Sb, Bi, As)
(Universiti Malaysia Perlis, 2010)We perform first principles density functional pseudopotential calculation for the description of band structure ans optical responses a prototypical family of quasi-molecular layered solid of the type Al₃ where A = Sb, ... -
Gas flow and temperature synthesis dependence on the CNTs structure and yield
(Universiti Malaysia Perlis, 2010)Recently, research on CNTs received good attention because of their potential applications in field emission, energy storage, chemical sensors and microelectronic devises. The study in this paper is bases on the comparison ... -
InS semiconductor-metal hybrid structure (SMH) as a magnetic sensor prepared by flash evaporation
(Universiti Malaysia Perlis, 2010)n-type indium-Au van der Pauw (vdP) shape hybrid macro-structure were successfully fabricated by flash evaporation technique. The elemental composition of the prepared films was confirmed by energy dispersive X-ray ... -
Lead free ferroelectric films deposited by sol-gel for electronic applications
(Universiti Malaysia Perlis, 2010)Lead in electronic components is prohibited by the RoHS directive since july 2006. Nevertheless, there are some exceptions for example PbZrₓTi₁-ₓO₃ (PZT) materials because they present exceptional piezoelectric properties. ... -
Transport phenomena of circular particles and fibers rotating drum
(Universiti Malaysia Perlis, 2010)Several processing techniques have been proposed for the fabrication of functionally graded materials (FGMs), whose composition and microstructure, i.e., the chemical and physical properties vary in the specific direction. ... -
X-ray diffraction and mossbauer spectrometry investigations of invar nanoparticles produced by mechanical alloying
(Universiti Malaysia Perlis, 2010)Fe-Ni ultra-fine particles were prepared by mechanical alloying and phase transformation during mecahnical alloying was studied. Results show that phase transformation tendency is different during mechanical alloying of ...