Oxygen-vacancy-related low-frequency dielectric relaxation and electrical conduction inBi:SrTiO3

2000 ◽  
Vol 62 (1) ◽  
pp. 228-236 ◽  
Author(s):  
Chen Ang ◽  
Zhi Yu ◽  
L. E. Cross
Keyword(s):  
Oxygen Vacancy ◽  
Dielectric Relaxation ◽  
Electrical Conduction ◽  
Low Frequency

Oxygen-vacancy-related high-temperature dielectric relaxation and electrical conduction in 0.95K0.5Na0.5NbO3–0.05BaZrO3 ceramic

2012 ◽  
Vol 407 (1) ◽  
pp. 136-139 ◽  
Author(s):  
Laijun Liu ◽  
Yanmin Huang ◽  
Yunhua Li ◽  
Meixie Wu ◽  
Liang Fang ◽  
...  
Keyword(s):  
High Temperature ◽  
Oxygen Vacancy ◽  
Dielectric Relaxation ◽  
Electrical Conduction

Dielectric Relaxation Studies of Silver Nanoparticles dispersed Liquid Crystal

2015 ◽  
Vol 8 (3) ◽  
pp. 2176-2188 ◽  
Author(s):  
Keisham Nanao Singh
Keyword(s):  
Activation Energy ◽  
Silver Nanoparticles ◽  
Liquid Crystal ◽  
Dielectric Relaxation ◽  
Relaxation Process ◽  
Relaxation Times ◽  
Low Frequency ◽  
Bulk Liquid ◽  
Molecular Rearrangement ◽  
Relaxation Studies

This article reports on the Dielectric Relaxation Studies of two Liquid Crystalline compounds - 7O.4 and 7O.6 - doped with dodecanethiol capped Silver Nanoparticles. The liquid crystal molecules are aligned homeotropically using CTAB. The low frequency relaxation process occurring above 1 MHz is fitted to Cole-Cole formula using the software Dielectric Spectra fit. The effect of the Silver Nanoparticles on the molecular dipole dynamics are discussed in terms of the fitted relaxation times, Cole-Cole distribution parameter and activation energy. The study indicate a local molecular rearrangement of the liquid crystal molecules without affecting the order of the bulk liquid crystal molecules but these local molecules surrounding the Silver Nanoparticles do not contribute to the relaxation process in the studied frequency range. The observed effect on activation energy suggests a change in interaction between the nanoparticles/liquid crystal molecules.

Dielectric Relaxation at Ultra Low Frequency

2003 ◽  
Vol 294 (1) ◽  
pp. 3-11
Author(s):  
E. R. Neagu ◽  
J. N. Marat-Mendes ◽  
C. J. Dias
Keyword(s):  
Dielectric Relaxation ◽  
Low Frequency

Low-frequency dielectric relaxation of hematite and silica sols

Langmuir ◽  
1993 ◽  
Vol 9 (7) ◽  
pp. 1625-1633 ◽  
Author(s):  
Johan Kijlstra ◽  
Herman P. van Leeuwen ◽  
Johannes Lyklema
Keyword(s):  
Dielectric Relaxation ◽  
Low Frequency ◽  
Silica Sols
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