Electrical Properties of ZMR SOI Structures: Characterization Techniques and Experimental Results

1995 ◽  
pp. 169-180 ◽  
Author(s):  
T. E. Rudenko ◽  
A. N. Rudenko ◽  
V. S. Lysenko
Keyword(s):  
Electrical Properties ◽  
Experimental Results ◽  
Characterization Techniques

STUDIES ON THE TiO2 THIN FILMS DOPED WITH Fe3+

2005 ◽  
Vol 19 (01n03) ◽  
pp. 671-673
Author(s):  
PENG XIAO ◽  
WANLU WANG
Keyword(s):  
Thin Films ◽  
Raman Spectroscopy ◽  
Electrical Properties ◽  
Sol Gel ◽  
Experimental Results ◽  
X Ray Diffraction ◽  
Tio2 Thin Films ◽  
Gel Method ◽  
X Ray ◽  
Nanometer Particles

The Fe 3+- TiO 2 thin films obtained through sol-gel method were characterized by x-ray diffraction, AFM and Raman spectroscopy. It was found that TiO 2 films consisted of nanometer particles. The experimental results shows that the nanometer TiO 2 thin films doped with Fe 3+ were greatly improved in the activity aspect. This may be ascribed to change their structure and electrical properties after doping with Fe 3+. The results were discussed theoretically in detail.

scholarly journals Preparation and Study of some Electrical Properties of PVA-Ni(NO3)2 Composites

2014 ◽  
Vol 40 ◽  
pp. 36-42 ◽  
Author(s):  
Sabah A. Salman ◽  
Nabeel A. Bakr ◽  
Mohammed H. Mahmood
Keyword(s):  
Activation Energy ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Filler Content ◽  
Experimental Results ◽  
Casting Technique ◽  
Different Temperatures

The aim of this paper is to prepare and study the (D.C.) electrical conductivity of (PVA-Ni (NO3)2) composites at different temperatures. For that purpose, PVA films with Ni (NO3)2 salt additive were prepared with different concentrations‎ 2, 4, 6, 8 and 10 wt. % and with thickness of 45μm by using casting technique. The experimental results for PVA-Ni (NO3)2) ‎films show that the (D.C.) electrical‏ ‏conductivity increased with increasing ‎the filler content and the‏ ‏temperature, and the activation energy was ‎decreased with increasing the filler content‎.

scholarly journals Micro-Structure Modelling and Electrical Properties Analysis of PZT Matrix Ferroelectric Composites

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 448 ◽  
Author(s):  
Weibin Zhou ◽  
Jinbo Fan ◽  
Zhenchao Xin ◽  
Guodong You
Keyword(s):  
Dielectric Constant ◽  
Electrical Properties ◽  
Random Access ◽  
Volume Ratio ◽  
Experimental Results ◽  
The Real ◽  
High Dielectric Permittivity ◽  
Important Research Topic ◽  
Microstructure Model ◽  
High Dielectric

PZT matrix ferroelectric composite is an important research topic in material science because of its many practical, industrial, and scientific applications. Materials with high dielectric permittivity are used to manufacture electronic devices, particularly capacitors and dynamic random access memory (DRAM). Therefore, the development of reliable and efficient micro models to be utilized in analyzing electrical properties can be of great value in accelerating research in this field. In this paper, a 3D microstructure model for PZT matrix ferroelectric composites has been developed and adopted the finite element method (FEM) to calculate the dielectric constant. The microscopy parameters of developed microstructure model are acquired based on the real composites from X-ray (micro-) diffraction and stereological method. The dielectric constant of different volume ratios of PZT matrix ferroelectric composites can be calculated by accurately controlling the volume of Ferrite particles. At the point of validation, the proposed approach makes visual and numeric comparisons between the morphology of the real microstructure and the model generated by the proposed technique. The simulation results by our method was essentially in agreement with experimental results in other literature. Simulation Experimental results also demonstrate that the dielectric constant of PZT matrix ferroelectric composites is significantly changed while the volume ratio of high dielectric phase particles was below 20%. PZT matrix ferroelectric composites Consequently, this method can be easily extended to composites preparation.

Study on Microstructure of ZnO Lighting Arrester with High Voltage Gradient

2011 ◽  
Vol 415-417 ◽  
pp. 1070-1073
Author(s):  
Mo He ◽  
Qi Bin Liu ◽  
Chang Qi Xia
Keyword(s):  
Electrical Properties ◽  
Leakage Current ◽  
High Voltage ◽  
Sintering Temperature ◽  
Holding Time ◽  
Experimental Results ◽  
Voltage Gradient ◽  
Volume Method ◽  
Mass Volume

To obtain ZnO arrester with high voltage gradient and small size, through the optimizing foundamental formula of arrester and changing sintering temperature and holding time, the electrical properties and microstructure of varistors were studied. The density of varistors was determined by using the mass - volume method , voltage gradient and leakage current of ZnO arrester were measured with Ⅱ Surge Arrester Tester DC parameters, microstructure of varistor ceramics were studied by means XRD and SEM. The experimental results show that with increasement of the sintering temperature, the density of varistors increases, and the voltage gradient continues to decrease and leakage current almost keeps unchangable. As the holding time increases, while as the voltage gradient continues to decrease, and leakage current almost unchanges.

Graphene nanoplatelets/epoxy nanocomposites: A review on functionalization, characterization techniques, properties, and applications

2021 ◽  
pp. 073168442110492
Author(s):  
Kadir Bilisik ◽  
Mahmuda Akter
Keyword(s):  
Electrical Properties ◽  
Mechanical Performance ◽  
Graphene Nanosheets ◽  
High Surface ◽  
Nanocomposite Materials ◽  
Graphene Nanoplatelets ◽  
Extensive Literature ◽  
Epoxy Nanocomposites ◽  
Characterization Techniques ◽  
Wide Range

Graphene nanoplatelets (GNPs) have received immense attention from the global scientific research community in the 21st century due to their two-dimensional planar structure, high surface area, functionalization abilities, and notable thermal-mechanical-electrical properties. When appropriately integrated into polymer matrices, graphene nanosheets improve the mechanical performance of polymer under static and high-strain rate loading. On the other hand, surface modification of GNPs through functionalization enhances dispersibility and interfacial strength of GNPs/polymer composites. Computational methods for GNPs-based nanocomposites considering micromechanical and multiscale modeling were also developed to predict their thermo-mechanical and electrical properties. These nanocomposite materials have been identified as having a wide range of applications in aerospace, automotive, construction, biomedical, energy storage, sensor, and textiles. In this review paper, recent advances of GNPs/epoxy nanocomposites, including their functionalization processes, characterization techniques, production methods, properties, and potential applications, have been comprehensively explained. Furthermore, it attempts to provide a complete framework for researchers by summarizing and evaluating the extensive literature on these nanocomposite materials.

Effect of Mn, Si on Varistor-Dielectric Characteristics of Nb-doped SrTiO3 Ceramics

2012 ◽  
Vol 239-240 ◽  
pp. 1604-1608
Author(s):  
Ning Zhang Wang ◽  
Jian Ye Li ◽  
Ji Ning ◽  
Jing Liu
Keyword(s):  
Dielectric Constant ◽  
Electrical Properties ◽  
Dielectric Loss ◽  
Nonlinear Coefficient ◽  
Experimental Results ◽  
Dielectric Characteristics ◽  
Srtio3 Ceramics

The varistor-dielectric characteristics of SrTiO3 ceramics with various amounts of MnCO3 and SiO2 additives was studied. The experimental results show that , with the increase of added amounts of MnCO3, the resistivity (ρ), nonlinear coefficient (α) and varistor voltage (V10mA) increase firstly and then decrease while the dielectric constant (ε) and dielectric loss (tgδ) decrease firstly and then increase. The best added amount of SiO2 is 0.4wt% because the electrical properties of SrTiO3 ceramics drop when x(SiO2)>0.4wt%.The SrTiO3 based ceramic, with the doping of 0.5mol%Nb2O5+0.5mol%MnCO3+0.4wt%SiO2, the better microstructure and electrical properties can be obtained.

Exponential Conductivity Increase in Strained MoS2 via MEMS Actuation

MRS Advances ◽  
2019 ◽  
Vol 4 (38-39) ◽  
pp. 2135-2142
Author(s):  
A. Vidana ◽  
S. Almeida ◽  
M. Martinez ◽  
E. Acosta ◽  
J. Mireles ◽  
...  
Keyword(s):  
Experimental Data ◽  
Electrical Properties ◽  
Microelectromechanical Systems ◽  
The Body ◽  
Experimental Results ◽  
Force Balance ◽  
Balance Model ◽  
Standard Process ◽  
Conductivity Increase ◽  
Cmos Compatible

ABSTRACTIn this work, a poly-Si0.35Ge0.65 microelectromechanical systems (MEMS)- based actuator was designed and fabricated using a CMOS compatible standard process to specifically strain a bi-layered (2L) MoS2 flake and measure its electrical properties. Experimental results of the MEMS-TMDC device show an increase of conductivity up to three orders of magnitude by means of vertical actuation using the substrate as the body terminal. A force balance model of the MEMS-TMDC was used to determine the amount of strain induced in the MoS2 flake. Strains as high as 3.3% is reported using the model fitted to the experimental data.

Drain Side N+ Layout Manners ("npnpn" Arranged-Type) on ESD Robustness in the 60-V pLDMOS-SCR

2017 ◽  
Vol 870 ◽  
pp. 401-406
Author(s):  
Shen Li Chen ◽  
Yu Ting Huang ◽  
Chih Hung Yang ◽  
Chih Ying Yen ◽  
Kuei Jyun Chen ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Breakdown Voltage ◽  
Electrostatic Discharge ◽  
Reference Group ◽  
Type Structure ◽  
Experimental Results ◽  
Drain Side

Electrostatic-discharge (ESD) immunity measurements of different layout manners in the drain-side of HV pLDMOS devices are investigated in this paper. Here, eleven kinds of drain-side "npnpn" arranged-types of pLDMOS-SCR parasitic structure are used to evaluate the layout impacts on ESD robustness. In this study, at first the layout type of N+ region is continuous extended into the drain-side P+ cathode. Secondly, the layout type of N+ region is modulated by some discrete-distributed areas in the drain-side. From the experimental results, we can find that the ESD capability of the continuous extended and discrete distributed in the drain-side can be promoted, where all of the secondary breakdown current (It2) values can be achieved 7 A. However, the discrete-distributed layout type has higher breakdown voltage (VBK) than that of the reference group (the pure none modulated pLDMOS-SCR npnpn-type structure). Therefore, the discrete-distributed layout types show good electrical properties and reliability immunities.

Fatigue and Electrical Properties of CNT/Phenolic Composites under Moisture-Temperature Effects

2007 ◽  
Vol 334-335 ◽  
pp. 769-772 ◽  
Author(s):  
Ming Chuen Yip ◽  
Hung Yuan Wu
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Electrical Properties ◽  
Phenolic Resin ◽  
Heat Stability ◽  
Experimental Results ◽  
Electric Resistance ◽  
Weight Percentage ◽  
Mechanical And Electrical Properties ◽  
Properties Of Composites

Carbon nanotubes have excellent mechanical and electrical properties such as high stiffness, light weight, heat stability, excellent heat conductivity, and excellent electrical conductivity. This study was aimed into investigate the properties of composites consisting of adding several different proportions of carbon nanotubes to phenolic resin, which contained tensile strength, fatigue life and electrical properties. The experimental results showed that the electric resistance decreases as the weight percentage of the nanotubes increases, also the tensile strength increased as the nanotubes increased. After the different moisture-temperature circumstances and thermal cycling, the increase of the electric resistance was compared to the pristine composites. The experimental results hoped to be understood from the fracture surface observations by scanning electron microscope (SEM).

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