scholarly journals THEORETICAL ANALYSIS OF THE ELECTRICAL CONDUCTION AND DIELECTRIC BEHAVIOR OF α-LiIO3 SINGLE CRYSTALS

1977 ◽  
Vol 26 (6) ◽  
pp. 500
Author(s):  
LI TIE-CHENG ◽  
XU ZHENG-YI
Keyword(s):  
Theoretical Analysis ◽  
Single Crystals ◽  
Electrical Conduction ◽  
Dielectric Behavior

scholarly journals Theoretical Models for Interpreting the Dielectric Behaviour of HF-doped Ice

1978 ◽  
Vol 21 (85) ◽  
pp. 123-141 ◽  
Author(s):  
G. C. Camplin ◽  
J. W. Glen ◽  
J. G. Paren
Keyword(s):  
Single Crystals ◽  
Electrical Conduction ◽  
Fluoride Concentration ◽  
Theoretical Models ◽  
Data Set ◽  
Wide Range ◽  
Yield Values ◽  
Full Knowledge ◽  
The Common ◽  
Ice Lattice

AbstractTo understand the recent dielectric measurements made on HF-doped ice single crystals requires a full knowledge of the concentration of electrical defects present in ice and their subsequent interactions. Previous interpretations of the behaviour of HF-doped ice have concentrated upon specific features in isolation, whereas this paper presents analyses of a data set of 139 temperature and impurity combinations from 17 HF-doped ice single crystals. The interpretation of the behaviour of these crystals is in terms of several possible theoretical models. All models are based upon the common assumptions that HF molecules enter the ice lattice substitutionally and that excess Bjerrum and ionic defects can be formed at the HF sites. They also use the theory of electrical conduction in ice by Jaccard (1959) and the defect equilibria analysis in ice by Kroger (1974).All models yield values for the concentration, mobility, energy of formation and charges for the different types of electrical defect considered to be generated.From the model which assumes that only three fluorine centres exist, the approximate derived values of the mobility and charge for the L-defect and positive ionic defect are as follows: μL = 5 × 10-8 m2 V-1 s-1 at 273 K, eDL = 0.44e; μ+ = 2.7 × 10-8 m2 V-1 s-1 at 273 K, e± 0.73e.Finally, using the derived defect conductivities and the Jaccard theory of electrical conduction, the relaxation tune of HF-doped ice has been successfully predicted over a wide range of temperature and fluoride concentration.

Low temperature dc electrical conduction in reduced lithium niobate single crystals

2013 ◽  
Vol 74 (1) ◽  
pp. 146-151 ◽  
Author(s):  
Ajay Dhar ◽  
Nidhi Singh ◽  
Rajiv K. Singh ◽  
Ramadhar Singh
Keyword(s):  
Low Temperature ◽  
Lithium Niobate ◽  
Single Crystals ◽  
Electrical Conduction

Electrical conduction in Eu2Ti2O7 single crystals

1991 ◽  
Vol 12 (3) ◽  
pp. 185-190 ◽  
Author(s):  
A.K. Pandit ◽  
R.A. Singh
Keyword(s):  
Single Crystals ◽  
Electrical Conduction

Fillers in Electrical Papers for Power Transformers

2014 ◽  
Vol 875-877 ◽  
pp. 335-340 ◽  
Author(s):  
Primo Alberto Calva ◽  
Aarón Israel Díaz ◽  
Hugo Martínez Gutierrez
Keyword(s):  
Electrical Properties ◽  
Theoretical Analysis ◽  
Structural Parameters ◽  
Dielectric Strength ◽  
Mineral Oil ◽  
Dielectric Behavior ◽  
Power Transformers ◽  
Mechanical Resistance ◽  
Kraft Paper ◽  
Natural Ester

The electric papers have a wide variety of uses like in transformers, cables and power capacitors. Each application involves different requirements related to its mechanical and electric properties. The kraft is the dielectric paper most used due its high mechanical resistance and a dielectric strength of around 5 kV/mm that is increased up to 30 kV/mm when is impregnated with mineral oil and typically has a density of 0.7, nevertheless continuous improvements in the design, for example, of power transformers raise the need to improve its electrical properties particularly those related to its relative permittivity. In this article, structural parameters such as distribution and pore size of kraft paper and theoretical analysis for possible addition of nanofillers to improve their dielectric behavior are reported. A possible and better criterion for designing transformers can be the employment of kraft paper nano-inserted with 5 % of TiO2 or BaTiO3 stew in mineral oil and immersed in natural ester liquid.

Theoretical Analysis on the Optoelectronic Properties of Single Crystals of Thiophene-furan-phenylene Co-Oligomers: Efficient Photoluminescence due to Molecular Bending

2013 ◽  
Vol 117 (16) ◽  
pp. 8072-8078 ◽  
Author(s):  
Hiroyuki Tamura ◽  
Ikutaro Hamada ◽  
Hui Shang ◽  
Kazuaki Oniwa ◽  
Md. Akhtaruzzaman ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Single Crystals ◽  
Optoelectronic Properties

A study of thermal and dielectric behavior of melaminium perchlorate monohydrate single crystals

2012 ◽  
Vol 112 (3) ◽  
pp. 1317-1323 ◽  
Author(s):  
N. Kanagathara ◽  
M. K. Marchewka ◽  
N. Sivakumar ◽  
K. Gayathri ◽  
N. G. Renganathan ◽  
...  
Keyword(s):  
Single Crystals ◽  
Dielectric Behavior
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