Glass in Two Forms: Heterogeneous Electrical Relaxation in Nanoglassy Petalite

2019 ◽  
Vol 123 (15) ◽  
pp. 10153-10162 ◽  
Author(s):  
Bernhard Gadermaier ◽  
Bernhard Stanje ◽  
Alexandra Wilkening ◽  
Ilie Hanzu ◽  
Paul Heitjans ◽  
...  
Keyword(s):  
Electrical Relaxation

The origin of the observed low-frequency electrical polarization in sandstones

Geophysics ◽  
2006 ◽  
Vol 71 (5) ◽  
pp. G235-G238 ◽  
Author(s):  
Julian B. Scott
Keyword(s):  
Double Layer ◽  
Electrical Double Layer ◽  
Ionic Composition ◽  
Low Frequency ◽  
Ionic Mobility ◽  
Electrical Measurements ◽  
Pore Throat ◽  
Polarization Model ◽  
Electrical Relaxation ◽  
Water Saturated

There has been an increasing debate regarding the mechanism controlling the low-frequency polarization (megahertz to kilohertz) in sandstones. The polarization and related electrical relaxation are extremely important because they can be used to provide a significant amount of information on length scales within the sandstone. Complex electrical measurements, in the mHz to kHz range, were made on gel-filled samples. This gel decreases the ionic mobility in the bulk pore fluid while keeping the ionic composition similar to that in a water-saturated sample. The presence of the gel was shown to have little effect on the electrical relaxation. This adds to the argument that the electrical double layer close to the grain surface is where the polarization originates. The correlation between pore-throat size and the relaxation time is consistent with the polarization mechanism of ion diffusion within the electrical double layer. The membrane-type polarization model, used previously to explain the polarization in pore-throat regions, is likely to be incorrect because of the relative thinness of the electrical double layer.

STRUCTURAL AND ELECTRICAL RELAXATION STUDIES OF NANOCRYSTALLINE24MATERIAL

2012 ◽  
pp. 386-394
Author(s):  
RAJESH CHERUKU ◽  
LAKSHMI VIJAYAN ◽  
G. GOVINDARAJ
Keyword(s):  
Electrical Relaxation ◽  
Relaxation Studies

Electrical relaxation of dimers in rare earth-doped calcium fluoride

1993 ◽  
Vol 54 (5) ◽  
pp. 513-516 ◽  
Author(s):  
P.C. McGowan ◽  
J.J. Fontanella ◽  
M.C. Wintersgill ◽  
J.F. Lomax ◽  
L.M. Hayden
Keyword(s):  
Rare Earth ◽  
Calcium Fluoride ◽  
Electrical Relaxation ◽  
Rare Earth Doped

Radiation induced electrical relaxation in rare earth doped calcium fluoride

1984 ◽  
Vol 1 (2-3) ◽  
pp. 431-435 ◽  
Author(s):  
J.J. Fontanella ◽  
M.C. Wintersgill ◽  
G.C. Kolodziejczak ◽  
D.R. Figueroa ◽  
C.G. Andeen ◽  
...  
Keyword(s):  
Rare Earth ◽  
Calcium Fluoride ◽  
Electrical Relaxation ◽  
Radiation Induced ◽  
Rare Earth Doped

Thermal, mechanical and electrical relaxation phenomena in a-Se films

1989 ◽  
Vol 114 ◽  
pp. 49-51 ◽  
Author(s):  
S.O Kasap ◽  
Brad Polischuk ◽  
Viswanath Aiyah ◽  
S Yannacopoulos
Keyword(s):  
Relaxation Phenomena ◽  
Electrical Relaxation

Enhanced conductivity and electrical relaxation studies of carbon-coated LiMnPO4 nanorods

Ionics ◽  
2012 ◽  
Vol 19 (3) ◽  
pp. 461-469 ◽  
Author(s):  
P. Ramesh Kumar ◽  
M. Venkateswarlu ◽  
Manjusri Misra ◽  
Amar K. Mohanty ◽  
N. Satyanarayana
Keyword(s):  
Electrical Relaxation ◽  
Carbon Coated ◽  
Relaxation Studies ◽  
Enhanced Conductivity
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