Temperature dependence of dielectric properties of SiCf/PyC/SiC composites

2015 ◽  
Vol 195 ◽  
pp. 12-19 ◽  
Author(s):  
Huihui Song ◽  
Wancheng Zhou ◽  
Fa Luo ◽  
Zhibin Huang ◽  
Yuchang Qing ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Temperature Dependence ◽  
Sic Composites

Effects of BN/SiC dual-layer interphase on mechanical and dielectric properties of SiCf/SiC composites

2014 ◽  
Vol 40 (2) ◽  
pp. 3411-3418 ◽  
Author(s):  
Yang Mu ◽  
Wancheng Zhou ◽  
Fa Luo ◽  
Dongmei Zhu
Keyword(s):  
Dielectric Properties ◽  
Sic Composites

Interaction of Point Defects in Ice

1978 ◽  
Vol 21 (85) ◽  
pp. 115-122
Author(s):  
J. H. Bilgram ◽  
H. Gränicher
Keyword(s):  
Experimental Data ◽  
Dielectric Properties ◽  
Temperature Dependence ◽  
Point Defects ◽  
Low Frequency ◽  
Defect Concentration ◽  
Dielectric Measurements ◽  
Long Time ◽  
Nmr Techniques ◽  
Bjerrum Defect

AbstractThe interaction of point detects in ice has been neglected for a long time. Experimental data obtained from dielectric measurements on HF-doped crystals stimulated a new evaluation of the possibility of an interaction between Bjerrum defects and ions. In a previous paper it has been shown that this leads us to assume the existence of aggregates of Bjerrum defects and ions. In this paper these aggregates and Bjerrum defects are used to explain the dielectric properties of ice, especially the temperature dependence of the product of the high and low frequency conductivity σ0σ∞.The interaction of Bjerrum defects and impurity molecules leads to a dependence of the concentration of frenkel pairs on Bjerrum-defect concentration. At HF concentrations above the native Bjerrum-defect concentration the formation of a Frenkel pair is enhanced. This leads to the fast out-diffusion which has been studied in highly doped crystals by means of NMR techniques.

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