Inter-cluster distance dependence of electrical properties in single crystals of a mixed-valence polyoxometalate

2017 ◽  
Vol 46 (37) ◽  
pp. 12619-12624 ◽  
Author(s):  
Ryo Tsunashima ◽  
Ippei Nakamura ◽  
Rika Oue ◽  
Seiya Koga ◽  
Hirofumi Oki ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Single Crystals ◽  
Mixed Valence ◽  
Distance Dependence ◽  
Cluster Distance

Electrical conductivity of [MoV2MoVI16O54(SO3)2]6− was investigated through dependence on the inter-cluster distance controlled by tetraethylammonium, tetrapropylammonium, and tetrabutylammonium cations.

Notizen: Electrical Conduction in Thioxanthene

1976 ◽  
Vol 31 (9) ◽  
pp. 1301-1302
Author(s):  
S. Pietra ◽  
A. Tenaglia
Keyword(s):  
Activation Energy ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Single Crystals ◽  
Electrical Conduction

Electrical conductivity of thioxanthene single crystals has been observed. The electrons, injected from the electrodes or freed by sulphur atoms, are responsible for the electrical properties. The activation energy for the conduction is higher than in thianthrene, it depends maybe on the number of S atoms in the molecule.

scholarly journals Electrical Properties of Cd Doped InSe Crystals

2019 ◽  
Vol 19 (2) ◽  
pp. 159-162
Author(s):  
V.M. Kaminskii ◽  
Z.D. Kovalyuk ◽  
V.I. Ivanov ◽  
I.G. Tkachyuk ◽  
V.V. Netyaga
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Electric Field ◽  
Single Crystals ◽  
Indium Selenide ◽  
Alternating Electric Field

The measurements of electrical conductivity along (alternating electric field) and across (direct electric field)the crystallographic C axis of Cd‐doped indium selenide single crystals are carried out. The parameters of thehopping conductivity of InSe <Cd> are calculated.

scholarly journals Electrical properties of cation-substituted Ag7(Si1–xGex)S5I single crystals

2021 ◽  
Vol 24 (3) ◽  
pp. 241-247
Author(s):  
I.P. Studenyak ◽  
◽  
A.I. Pogodin ◽  
I.A. Shender ◽  
M.J. Filep ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Single Crystals ◽  
Solid Solutions ◽  
Frequency Range ◽  
Electronic Components ◽  
High Quality ◽  
Crystallization Method ◽  
Vertical Zone ◽  
Nyquist Plots

High-quality single crystals of Ag7(Si1–xGex)S5I (x = 0.2, 0.4, 0.6, 0.8) solid solutions are grown from the solution–melt by vertical zone crystallization method. The measurements of electrical conductivity of Ag7(Si1–xGex)S5I solid solutions were performed using the impedance spectroscopy method within the frequency range from 10 Hz up to 2·106 Hz and temperature interval 293–383 K. Ionic and electronic components of electrical conductivity, as well as their ratios, were determined using the Nyquist plots.

scholarly journals New Solids in As-O-Mo, As(P)-O-Mo(W) and As(P)-O-Nb(W) Systems That Exhibit Nonlinear Optical Properties

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1494
Author(s):  
Nikolay Gerasimchuk ◽  
Lauri Kivijarvi ◽  
Bruce Noll ◽  
Meriem Goudjil ◽  
Soma Khanra ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Second Harmonic Generation ◽  
Single Crystals ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Mixed Valence ◽  
Visible Region ◽  
Space Groups ◽  
Air Atmosphere ◽  
Practical Usefulness

Interactions between well-mixed fine powders of As2O3, P2O5, MoO3, WO3 and Nb2O5 at different stoichiometry in quartz ampoules under vacuum at ~1000 °C in the presence of metallic molybdenum (or niobium), over several weeks, led to shiny dichroic crystalline materials being formed in cooler parts of the reaction vessel. An addition of small quantities of metals-Mo or Nb-was made with the aim of partially reducing their highly oxidized Mo(VI), W(VI) or Nb(V) species to corresponding Mo(V), W(V) and Nb(IV) centers, in order to form mixed valence solids. Sublimed crystals of four new compounds were investigated using a variety of techniques, with prime emphasis on the X-ray analysis, followed by spectroscopy (diffusion reflectance, IR, Raman and EPR), second harmonic generation (SHG), thermal analysis under N2 and air atmosphere, and single crystals electrical conductivity studies. The results evidenced the formation of new complex solids of previously unknown compositions and structures. Three out of four compounds crystallized in non-centrosymmetric space groups and represent layered 2D polymeric puckered structures that being stacked on each other form 3D lattices. All new solids exhibit strong second-harmonic-generation (SHG effect; based on YAG 1064 nm tests with detection of 532 nm photons), and a rare photosalient effect when crystals physically move in the laser beam. Single crystals’ electrical conductivity of the four new synthesized compounds was measured, and the results showed their semiconductor behavior. Values of band gaps of these new solids were determined using diffusion reflectance spectroscopy in the visible region. Aspects of new solids’ practical usefulness are discussed.

Effect of Gamma Radiation on Structural, Optical and Electrical Properties of nanostructured CdHgTe Thin Films

2018 ◽  
Vol 1 (1) ◽  
pp. 26-31 ◽  
Author(s):  
B Babu ◽  
K Mohanraj ◽  
S Chandrasekar ◽  
N Senthil Kumar ◽  
B Mohanbabu
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Gamma Radiation ◽  
Glass Substrate ◽  
Gamma Ray ◽  
Optical And Electrical Properties ◽  
Deposition Technique ◽  
Polycrystalline Structure ◽  
Dc Electrical Conductivity

CdHgTe thin films were grown onto glass substrate via the Chemical bath deposition technique. XRD results indicate that a CdHgTe formed with a cubic polycrystalline structure. The crystallinity of CdHgTe thin films is gradually deteriorate with increasing the gamma irradiation. EDS spectrums confirms the presence of Cd, Hg and Te elements. DC electrical conductivity results depicted the conductivity of CdHgTe increase with increasing a gamma ray dosage

Effect of the structure of cellulose acetate membranes on their permeability, electrical conductivity and rejection

1990 ◽  
Vol 55 (12) ◽  
pp. 2933-2939 ◽  
Author(s):  
Hans-Hartmut Schwarz ◽  
Vlastimil Kůdela ◽  
Klaus Richau
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Water Flux ◽  
Cellulose Acetate Membrane ◽  
Structure Parameters ◽  
Dc Electrical Conductivity ◽  
Cellulose Acetate Membranes

Ultrafiltration cellulose acetate membrane can be transformed by annealing into reverse osmosis membranes (RO type). Annealing brings about changes in structural properties of the membranes, accompanied by changes in their permeability behaviour and electrical properties. Correlations between structure parameters and electrochemical properties are shown for the temperature range 20-90 °C. Relations have been derived which explain the role played by the dc electrical conductivity in the characterization of rejection ability of the membranes in the reverse osmosis, i.e. rRO = (1 + exp (A-B))-1, where exp A and exp B are statistically significant correlation functions of electrical conductivity and salt permeation, or of electrical conductivity and water flux through the membrane, respectively.

Enhanced electrical conductivity of Au–LaNiO3 nanocomposite thin films by chemical solution deposition

RSC Advances ◽  
2015 ◽  
Vol 5 (94) ◽  
pp. 76783-76787 ◽  
Author(s):  
H. L. Wang ◽  
X. K. Ning ◽  
Z. J. Wang
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Chemical Solution Deposition ◽  
Nanocomposite Films ◽  
Chemical Solution ◽  
Solution Deposition ◽  
Nanocomposite Thin Films ◽  
One Step

Au–LaNiO3 (Au–LNO) nanocomposite films with 3.84 at% Au were firstly fabricated by one-step chemical solution deposition (CSD), and their electrical properties were investigated.

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