Electrical Properties of Na2O - SiO2 Dried Gels

1984 ◽  
Vol 32 ◽  
Author(s):  
D. Ravaine ◽  
J. Traore ◽  
L. C. Klein ◽  
I. Schwartz
Keyword(s):  
Thermogravimetric Analysis ◽  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Sodium Methoxide ◽  
Sodium Acetate ◽  
Room Temperature ◽  
Sodium Ethoxide ◽  
Residual Water ◽  
Protonic Conductivity ◽  
Drying Process

ABSTRACTGels with compositions Na2O-(1-x)SiO2 were prepared from tetraethylorthosilicate (TEOS) with sodium acetate and from tetramethylorthosilicate (TMOS) with sodium methoxide or TEOS with sodium ethoxide. After gelation (10 min.) the samples were slowly dried for about one month at room temperature. Thermogravimetric analysis (up to 500°C) in air and O2 atmosphere was performed. The electrical properties were studied in air by impedance spectroscopy during successive temperature cycles starting from room temperature dried gels of composition 0.10 Na2O 0.90 SiO2. Protonic conductivity appears to be eliminated after reaching the 2nd stage of the drying process (200°C). The activation energies for conduction and the conductivities show small discrepancies from known values for homogeneous glasses of equivalent compositions. Considering the effect of water on the conductivity of glasses prepared by the melting procedure, one can estimate the residual water content in the so-called dried gels to be close to 0.5 wt %.

Electrical Properties of CuTCNQ Based Organic Memories Targeting Integration in the CMOS Back End-of-Line

2007 ◽  
Vol 997 ◽  
Author(s):  
Robert Mueller ◽  
Joris Billen ◽  
Rik Naulaerts ◽  
Olivier Rouault ◽  
Ludovic Goux ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Thermogravimetric Analysis ◽  
Electrical Properties ◽  
Room Temperature ◽  
Charge Transfer Complex ◽  
Temperature Dependent ◽  
Electrical Switching ◽  
Nonvolatile Memories ◽  
Threshold Voltages ◽  
Organic Memories

AbstractCuTCNQ (TCNQ=7,7,8,8-tetracyanoquinodimethane) is a resistive switching charge-transfer complex which can be used for organic nonvolatile memories. In this contribution we report on a thorough investigation of the electrical switching of CuTCNQ memories. Our memories currently achieve an endurance of up to 10000 write/erase cycles with a clear distinction between ON and OFF reading currents. ON and OFF threshold voltages follow a Gaussian distribution. Temperature dependent measurements of CuTCNQ based organic memories show a semiconductor like behavior for the ON state. The retention time of the ON state exceeded 60 hours at room temperature. Electrical switching of CuTCNQ memories in air was virtually not affected by temperatures up to 80°C, but becomes erratic at 120°C. The CuTCNQ material itself already starts to decompose around 200°C in presence of oxygen as shown by thermogravimetric analysis.

Influence of Lanthanum Concentration on Properties of BLT Electroceramics

2012 ◽  
Vol 512-515 ◽  
pp. 1308-1312 ◽  
Author(s):  
Beata Wodecka-Duś ◽  
Agata Lisińska-Czekaj ◽  
Dionizy Czekaj
Keyword(s):  
Dielectric Properties ◽  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Frequency Domain ◽  
Room Temperature ◽  
Ferroelectric Properties ◽  
Lcr Meter ◽  
La Doped

Results of fabrication and study of Ba1-xLaxTi1-x/4O3(BLT) ceramics for x within the range 0.001≤x≤0.004 is reported in the present paper. BLT ceramics has a structure based on ABO3–type perovskite, and its properties strongly depend on the chemical comSubscript textposition. The interrelated semiconductor and ferroelectric properties of La-doped BaTiO3ceramics were considered for describing its electrical properties. Dielectric properties were studied in frequency domain by impedance spectroscopy with a Quadtech 1920-type precision LCR meter at room temperature T=RT.

Electrical Properties of Starch/PEO Blend Polymer Electrolytes

2015 ◽  
Vol 754-755 ◽  
pp. 29-33
Author(s):  
K. Ramly ◽  
A.S.A. Khiar
Keyword(s):  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Ammonium Nitrate ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Solution Casting ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Blend Polymer

Films of starch/PEO blends were prepared via solution casting technique and their properties with different amount of ammonium nitrate, NH4NO3were compared. The measurement of conductivity at room temperature were carried out using impedance spectroscopy. The highest conductivity calculated is found to be 2.81±0.46 x 10-7Scm-1with addition of 35wt% NH4NO3 .

Phase Transformations in Li-Mn-O Spinels Synthesized by Sol-Gel Method

2004 ◽  
Vol 443-444 ◽  
pp. 311-314 ◽  
Author(s):  
D. Lisovytskiy ◽  
Z. Kaszkur ◽  
V. N. Baumer ◽  
J. Pielaszek ◽  
J. Marzec ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
Thermogravimetric Analysis ◽  
Impedance Spectroscopy ◽  
Electric Conductivity ◽  
Room Temperature ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Lattice Constants

Abstract. Lithium-manganese spinels obtained by sol-gel method were studied by XRD, impedance spectroscopy, electric conductivity and thermogravimetric analysis (TGA). Heating of low-temperature spinels up to 630° C leads to the formation of spinels with lattice constants close to stoichiometric high-temperature spinels, which exhibit no phase transition around room temperature and have good electric conductivity.

scholarly journals Synthesis and electrical properties of Ag16I12P2O7

2021 ◽  
Vol 340 ◽  
pp. 01046
Author(s):  
Artem Ulihin ◽  
Olga Protazanova
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Solid Electrolyte ◽  
Wide Temperature Range ◽  
Room Temperature ◽  
Complex Impedance ◽  
High Ionic Conductivity ◽  
Spectroscopy Method

Superionic solid electrolyte Ag16I12P2O7 was prepared using solid state synthesis. The ionic conductivity of this compound was studied by the complex impedance spectroscopy method in a wide temperature range. It is shown that Ag16I12P2O7 is characterized by a high ionic conductivity at room temperature, comparable to the conductivity of liquid electrolytes.

Redox-Inactive CO2 Determines Atmospheric Stability of Electrical Properties of ZnO Nanowire Devices through a Room-Temperature Surface Reaction

2019 ◽  
Vol 11 (43) ◽  
pp. 40260-40266
Author(s):  
Kentaro Nakamura ◽  
Tsunaki Takahashi ◽  
Takuro Hosomi ◽  
Takehito Seki ◽  
Masaki Kanai ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Room Temperature ◽  
Surface Reaction ◽  
Atmospheric Stability ◽  
Zno Nanowire ◽  
Temperature Surface

Electrical properties of (Cu1-xAgx)7GeS5I crystals investigated by impedance spectroscopy

2021 ◽  
Vol 363 ◽  
pp. 115593
Author(s):  
V. Kavaliukė ◽  
T. Šalkus ◽  
S. Balčiūnas ◽  
J. Banys ◽  
A.I. Pogodin ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Impedance Spectroscopy

Room temperature AC electrical properties of polypyrrole/chromium oxide composite

2020 ◽  
Author(s):  
N. Sasidhar ◽  
T. Chandrashekar ◽  
B. Chethan ◽  
Y. T. Ravikiran ◽  
R. Megha
Keyword(s):  
Electrical Properties ◽  
Chromium Oxide ◽  
Room Temperature ◽  
Oxide Composite ◽  
Ac Electrical Properties
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