Frequency Exponent of Ionic Conductivity in One-Dimensional Random Lattices

2001 ◽  
Vol 70 (9) ◽  
pp. 2622-2625 ◽  
Author(s):  
Toshinori Abe ◽  
Tadao Ishii
2003 ◽  
Vol 17 (03) ◽  
pp. 373-382 ◽  
Author(s):  
C. V. KANNAN ◽  
S. GANESAMOORTHY ◽  
C. SUBRAMANIAN ◽  
P. RAMASAMY

The ionic conductivity of self-flux grown RbTiOPO 4 single crystal along the crystallographic a, b and c (polar) axes in the frequency range 100 Hz–10 MHz and in the temperature range 300–1140 K has been studied. The measured activation energy indicates the existence of super ionic conduction behavior in RTP crystals and also reveals that the DC electrical conduction and dielectric polarization are governed by the same mechanism. Complex impedance measurement shows the existence of non-Debye type of relaxation in the crystals.


1993 ◽  
Vol 62 (1) ◽  
pp. 183-195 ◽  
Author(s):  
Shin-ichi Furusawa ◽  
Hisaaki Hayasi ◽  
Yoshihiro Ishibashi ◽  
Akio Miyamoto ◽  
Takatomo Sasaki

2012 ◽  
Author(s):  
Anjani Kumar Tiwari ◽  
Ravitej Uppu ◽  
Sushil Mujumdar

2003 ◽  
Vol 17 (27n28) ◽  
pp. 1461-1476 ◽  
Author(s):  
X. Q. HUANG ◽  
S. S. JIANG ◽  
R. W. PENG ◽  
Y. M. LIU ◽  
F. QIU ◽  
...  

We obtain analytically a universal expression of the resonant energies for any one-dimensional (1D) models with the defects having symmetric internal structures. In a 1D periodic system with the on-site energy ε0=0 and a nearest-neighbor matrix element t0=1.0, two classes of the most interesting and simplest wavefunction behaviors are numerically obtained for the resonant energies around (a) 0, ±1, (b) [Formula: see text], respectively. We show that similar wavefunction behaviors can be found widely in many quasiperiodic and random systems where the delocalization phenomena are predicted. We suggest that the envelope of these wavefunctions can be generally used as a criterion of delocalization of electronic states in 1D random and quasiperiodic lattices.


2000 ◽  
Vol 69 (7) ◽  
pp. 2087-2091 ◽  
Author(s):  
Shin-ichi Furusawa ◽  
Hiroshi Sugiyama ◽  
Fumitake Itoh ◽  
Akio Miyamoto ◽  
Takatomo Sasaki

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