Effects of grain, grain boundary, and dc electric field on giant dielectric response in high purity CuO ceramics

2008 ◽  
Vol 104 (3) ◽  
pp. 036107 ◽  
Author(s):  
Prasit Thongbai ◽  
Santi Maensiri ◽  
Teerapon Yamwong
Keyword(s):  
Grain Boundary ◽  
Electric Field ◽  
High Purity ◽  
Dielectric Response ◽  
Giant Dielectric ◽  
Dc Electric Field

Giant Dielectric Response with an Electric Field in Charge-Ordered La1−xCaxMnO3Compounds

2009 ◽  
Vol 92 (6) ◽  
pp. 1366-1369 ◽  
Author(s):  
Ying Hou ◽  
Yiping Yao ◽  
Genqiang Zhang ◽  
Qingxuan Yu ◽  
Xiaoguang Li
Keyword(s):  
Electric Field ◽  
Dielectric Response ◽  
Giant Dielectric

Nonlinear Dielectric Response of Relaxor PMN-PZT Ceramics under DC Electric Field

2004 ◽  
Vol 307 (1) ◽  
pp. 151-159 ◽  
Author(s):  
S. A. GRIDNEV ◽  
A. A. GLAZUNOV ◽  
A. N. TSOTSORIN
Keyword(s):  
Electric Field ◽  
Dielectric Response ◽  
Pzt Ceramics ◽  
Nonlinear Dielectric ◽  
Dc Electric Field

Dielectric response of PMN–0.32PT single crystal and ceramics under dc electric field

2004 ◽  
Vol 30 (7) ◽  
pp. 2015-2018 ◽  
Author(s):  
Zhenrong Li ◽  
Zhuo Xu ◽  
Zengzhe Xi ◽  
Xi Yao
Keyword(s):  
Electric Field ◽  
Single Crystal ◽  
Dielectric Response ◽  
Dc Electric Field

scholarly journals Grain Boundary Resistivity of Yttria-Stabilized Zirconia at 1400°C

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
J. Wang ◽  
A. Du ◽  
Di Yang ◽  
R. Raj ◽  
H. Conrad
Keyword(s):  
Grain Size ◽  
Grain Boundary ◽  
Electric Field ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Brick Layer Model ◽  
Dc Electric Field ◽  
Lower Temperature ◽  
Boundary Width ◽  
Grain Boundary Resistivity

The grain size dependence of the bulk resistivity of 3 mol% yttria-stabilized zirconia at 1400°C was determined from the effect of a dc electric field Ea=18.1 V/cm on grain growth and the corresponding electric current during isothermal annealing tests. Employing the brick layer model, the present annealing test results were in accordance with extrapolations of the values obtained at lower temperature employing impedance spectroscopy and 4-point-probe dc. The combined values give that the magnitude of the grain boundary resistivity ρb=133 ohm-cm. The electric field across the grain boundary width was 28–43 times the applied field for the grain size and current ranges in the present annealing test.

Relaxation Behavior of Zr Substituted CaCu3Ti4O12 Ceramics

2011 ◽  
Vol 687 ◽  
pp. 375-379 ◽  
Author(s):  
Hong Tao Yu ◽  
Wen Bo Zhang ◽  
Jing Song Liu ◽  
Han Xing Liu
Keyword(s):  
Grain Size ◽  
Relaxation Time ◽  
Dielectric Properties ◽  
Grain Boundary ◽  
Dielectric Response ◽  
Relaxation Behavior ◽  
Impedance Spectra ◽  
Boundary Concentration ◽  
Giant Dielectric ◽  
Boundary Relaxation

The dielectric properties of Zr substituted CaCu3Ti4O12ceramics have been investigated in detail. Grain size decreases with Zr content increasing. The hetero-electrical microstructures of prepared samples have been confirmed by the impedance spectra. The dielectric loss has been improved by Zr doping because of the enhancement of grain boundary resistivity. A Debye-like boundary relaxation behavior has been observed in the temperature range of 220-600K. As Zr content increases, the relaxation time increases due to the higher grain boundary concentration. This work has provided an additional proof for the origin of giant dielectric response in CaCu3Ti4O12ceramics.

scholarly journals Formation of grain boundary second phase in BaTiO3 polycrystal under a high DC electric field at elevated temperatures

2016 ◽  
Vol 124 (4) ◽  
pp. 388-392 ◽  
Author(s):  
Hidehiro YOSHIDA ◽  
Akinori UEHASHI ◽  
Tomoharu TOKUNAGA ◽  
Katsuhiro SASAKI ◽  
Takahisa YAMAMOTO
Keyword(s):  
Grain Boundary ◽  
Electric Field ◽  
Elevated Temperatures ◽  
Second Phase ◽  
Dc Electric Field
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