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electrical properties

Tìm thấy 14+ kết quả cho từ khóa "electrical properties"

Summary of PhD Thesis: Diffusional and electrical properties of oxide materials with fluorite structure

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Tinh (2019), Investi- gation of electrical properties of Yttria- doped Ceria and Yttria- Stabilized Zirconia by statistical moment method, Journal of the Korean Physical Society

Synthesis, sintering, electrical properties, and sodium migration pathways of new lyonsite Na2Co2(MoO4)3

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Particular attention was paid to the importance of density control of ceramics, which dramatically affects the measured electrical properties, particularly conduc- tivity. A theoretical study is carried out to identify the probably sodium pathways in the anionic framework.. 26,27 The refinement was solved against F 2 in the crystal structure.

Structural, surface morphological, optical and electrical properties of InxSey thin films, an absorber layer for photovoltaic cells fabricated by M-CBD method using different variables

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Optical properties of e-beam evaporated indium selenide (InSe) thin films. doi: 10.9734/JSRR/2014/7658. Preparation, structure, composition, optical and photoelectrochemical properties of vacuum annealed In-Se thin films. Effect of annealing on the structural and optical properties of InSe bilayer thin films.. doi: 10.1016/j.vacuum . Annealing and light effect on optical and electrical properties of evaporated indium selenide thin films. doi: 10.1016/j.physe .

Electrical Properties Of Nb-Doped TiO2 Thin Films Deposited By Co-sputtering Process

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Hall measurement was used to evaluate electrical properties of co-sputtered NTO films after annealing. Figure 6, 7 and 8 show resistivity, carrier concentration, and Hall mobility of co-sputtered NTO films as a function of co-sputtered time. All of electrical properties improved significantly when Nb was added to NTO films. Resistivity decreased and carrier concentration became higher as co- sputtered time decreased.

Recent Developments of Electrical Drives - Part 7

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It is shown that the motor design with U-shape magnets has same electrical properties than the design with V-shape magnets.. Permanent magnet synchronous motors (PMSM) with buried magnets have been considered in a wide range of variable speed drives. The buried magnets construction also gives a possibility to form air gap and get smoother torque [1]. Some of the different rotor with buried magnets types are presented in Fig.

A model for electrical conductivity of porous materials under saturated conditions

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Archie, The Electrical Resistivity Log as an Aid in Determining some Reservoir Characteristics, Petrol.. 54-62, https://doi.org G.. Wood, Electrical Conductivity Models in Saturated Porous Media: A Review, Earth Sci. Rev., Vol. 419-433, https://doi.org/10.1016/j.earscirev . Kennedy, Electrical Efficiency a Pore Geometric Theory for Interpreting the Electrical Properties of Reservoir Rocks, Geophysics, Vol. 918-927, https://doi.org .

Structure, microstructure, and piezoelectric properties of knlns-bnkz lead-free ceramics under the effect of different sintering temperatures

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Effect of sintering temperature on phase transitions, properties and temperature stability of (K 0.465 Na 0.465 Li 0.07 )(Nb 0.95 Sb 0.05 )O 3 lead free piezoelectric ceramics. Phase transition and electrical properties of Bi 0.5 (Na 0.8 K 0.2 ) 0.5 ZrO 3 modified (K 0.52 Na 0.48 )(Nb 0.95 Sb 0.05 )O 3 lead- free piezoelectric ceramics. Role of sintering temperature on the phase stability and electrical properties of 0.94(K 0.5 Na 0.5 NbO 3 )-0.06(LiSbO 3 ) ceramics.

Improvement of electrochemical and structural properties of polycarbazole by simultaneous electrodeposition of chitosan

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The electrical conductivities of the PCz and composite materials are given in the Table.. The electrical conductivities of PCz and PCz/Chi composites.. As is known, the structural arrangements of the polymer chains might affect the electrical properties of conductive polymers. A higher electrical conductivity was determined for the PCz/Chi compared with the PCz film, indicating that the Chi interacts with PCz chains, and improves the electrical conductivity.

Principles And Applications Of Electrical Engineering P2

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Figure 2.19 depicts these behaviors.. the electrical properties of the material. R is the value of the resistance in units of ohms (Ω), where. For a cylindrical resistance element (shown in Figure 2.20), the resistance is proportional to the length of the sample, l, and inversely proportional to its cross-sectional area, A, and conductivity, σ. Figure 2.20 The resistance element. It is, however, only an approx- imation of the physics of electrically conducting materials.

Magnetotransport properties and magnetocaloric effect in La0.67Ca0.33Mn1 xTMxO3(TM¼Cu, Zn) perovskite manganites

repository.vnu.edu.vn

As a consequence, the magnetic and electrical properties of materials should be modified. Hence by a subsequent insertion of the proper transition metals into the B-sites, the bonding geometry (length, angle) around the Mn cations might be fine-tuned in a manner so that the magnitude of super-exchange (SE) and double-exchange (DE) inter- actions can be well controlled.

Optical Properties of PbS and Au-PbS Core-Shell Nanoparticles

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Adequate theoretical calculation is required to fully explain the dependence of the SPR of noble metallic nanoparticles on the electrical properties of the surrounding medium.

Effects of ZnO nanoparticles and graphene oxide on properties of acrylic polymer nanocomposite coating

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ZnO nanoparticles have been widely used because of their outstanding optical and electrical properties. ZnO nanoparticles combining. Effect of ZnO nanoparticles and graphene oxide on properties of acrylic polymer…. with acrylic polymer emulsion (AC261) produced UV-shielding coating [7]. Obviously, ZnO nanoparticles, in this case, acted as a UV absorber in the nanocomposite coating.

Effect of Mg doping on morphology, photocatalytic activity and related biological properties of Zn1−xMgxO nanoparticles

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Influence of Mg doping level on morphology, optical, electrical properties and antibacterial activity of ZnO nanostructures. Enhanced photocatalytic activity of ZnO/CuO nanocomposite for the degradation of textile dye on visible light illumination. Structural, optical, photocatalytic and antibacterial activity of ZnO and Co doped ZnO nanoparticles. A review of ZnO nanoparticles as solar photocatalysts: synthesis, mechanisms and applications.

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105365-TT-EN.pdf

dlib.hust.edu.vn

INTERNATIONAL TRAING INSTITUTE OF MATERIALS SCIENCE BATCH 2007 Title of MSc thesis: RESEARCH ON FABRICATION, MAGNETIC AND ELECTRICAL PROPERTIES OF DOUBLE MAGNETIC TUNNELING JUNCTIONS Author: VU THI HOAI HUONG Supervisor: Dr.

Synthesis, characterization, and electrical and optical properties of magnesium-type boracite

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Some selected magnesium type of boracite minerals, electrical resistivity, and optical absorbance properties were also measured for the determination of physical properties.. Key words: Magnesium-type boracite, solid-state synthesis, reaction yield.

The efficiency of short sintering time on thermoelectric properties of delafossite CuCr0.85Mg0.15O2 ceramics

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Figure 7: Thermoelectric properties of of CuCr 0.85 Mg 0.15 O 2 compounds. Figure 8: Temperature dependence of (a) the electrical, (b) the lattice, and (c) total thermal conductivity of CuCr 0.85 Mg 0.15 O 2 compounds prepared at sintering time of 3h and 12h.. 10 − 2 at the measuring temperature of 500 o C re- gardless of the short or long period of the sintering time.

Recent Developments of Electrical Drives - Part 22

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They are due mainly to differences in the magnetic properties of the materials used in simulations.. Indeed, the manufacturing process of the test device slightly deteriorated the magnetic properties of the iron sheets. In the future, better magnetic properties of the manufactured machine can be introduced into the simulation software for better results.. The vibrations of the induction machine are affect by the magnetostriction. The amplitudes of most of the frequency components are increased.

Effects of electrical current frequency on the physicochemical characteristics of wastewater

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In this paper, we will present the impacts of electrical current frequency (f = 0÷2.000 Hz) on the physicochemical properties of wastewater.. In order to study the change in the physicochemical properties of wastewater, we used equipment TR (figure 2), researched and fabricated in Center of Industrial Environment, Institute of Mining – Metallurgy Science and Technology.

Recent Developments of Electrical Drives - Part 21

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Some authors believe that the magnetostriction affects the vibrations of rotating electrical machines [1,2]. others claim that the magnetostriction can be ignored [3]. Uncoupled dynamic models for the vibrations of rotating electrical machines also have been presented [6–8]. The goal of this study is to establish the effect of magnetostriction and magnetoelastic coupling on the vibrations and noise of rotating electrical machines.

High-temperature thermoelectric properties of Ca1 xPrxMnO3 d ð0pxo1Þ

repository.vnu.edu.vn

The aim of this contribution is to investigate the HT thermoelectric properties of Ca 1x Pr x MnO 3. This system has the specific feature that the ionic radii of Pr 3+ (1.179 A) and Ca ( 2+. It is well known that the transport properties of perovskites depend strongly on the average size of the A cation. The Ca 1x Pr x MnO 3 solid solutions can exist in the whole concentration interval 0 p x p 1.