Logarithmic frequency dependence of the dynamical conductivity of one-dimensional disordered systems at low frequencies: a computer simulation for a very long chain

1984 ◽  
Vol 17 (16) ◽  
pp. 2905-2915 ◽  
Author(s):  
T Saso
Keyword(s):  
Computer Simulation ◽  
Frequency Dependence ◽  
Disordered Systems ◽  
Low Frequencies ◽  
One Dimensional ◽  
Logarithmic Frequency ◽  
Dynamical Conductivity ◽  
Long Chain

ON THE DIELECTRIC BEHAVIOR OF LiCo3/5Fe2/5VO4 CERAMICS

2010 ◽  
Vol 24 (07) ◽  
pp. 665-670
Author(s):  
MOTI RAM
Keyword(s):  
Activation Energy ◽  
Dielectric Constant ◽  
Frequency Dependence ◽  
Chemical Method ◽  
Arrhenius Plot ◽  
Dielectric Behavior ◽  
Tangent Loss ◽  
Low Frequencies ◽  
Different Temperatures ◽  
Tan Δ

The LiCo 3/5 Fe 2/5 VO 4 ceramics has been fabricated by solution-based chemical method. Frequency dependence of the dielectric constant (εr) at different temperatures exhibits a dispersive behavior at low frequencies. Temperature dependence of εr at different frequencies indicates the dielectric anomalies in εr at Tc (transition temperature) = 190°C, 223°C, 263°C and 283°C with (εr) max ~ 5370, 1976, 690 and 429 for 1, 10, 50 and 100 kHz, respectively. Frequency dependence of tangent loss ( tan δ) at different temperatures indicates the presence of dielectric relaxation in the material. The value of activation energy estimated from the Arrhenius plot of log (τd) with 103/T is ~(0.396 ± 0.012) eV.

Localization lengths in one-dimensional disordered systems

1972 ◽  
Vol 11 (1) ◽  
pp. 197-201 ◽  
Author(s):  
E.N. Economou ◽  
C. Papatriantafillou
Keyword(s):  
Disordered Systems ◽  
One Dimensional
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