Dielectric relaxation and electrical properties of 0.94Pb(Fe1∕2Nb1∕2)O3–0.06PbTiO3 single crystals

2005 ◽  
Vol 86 (15) ◽  
pp. 152907 ◽  
Author(s):  
Jie Wang ◽  
X. G. Tang ◽  
H. L. W. Chan ◽  
C. L. Choy ◽  
Haosu Luo
2020 ◽  
Vol 28 (2) ◽  
pp. 87-90
Author(s):  
V. M. Sidak ◽  
M. P. Trubitsyn

Electrical properties of heat treated in air and in vacuum Na0.5Bi0.5TiO3 single crystals were measured in AC field (f=1 kHz) in the range 300–800 K. Relaxation anomaly of permittivity ε(T) is observed near 700 K for the crystal heat treated in vacuum. It is argued that processing in vacuum generates the defect dipoles, which give rise to the dielectric anomaly. The character of the ε(T) experimental dependence is quite different from the predictions of Debye model. The non-Debye behavior of ε(T) is explained by the concentration decrease of dipole defects due to their thermal destruction at high temperatures. In addition, the ε(T) anomaly could be described more precisely by taking into consideration configurational and vibrational entropy of the subsystem of dipole defects. The observed dielectric relaxation is presumably attributed to reorientations of the dipole moments of Ti3+–VO centers.


2021 ◽  
pp. 126259
Author(s):  
Pengfei Yu ◽  
Pandeng Gao ◽  
Tingquan Shao ◽  
Wenfei Liu ◽  
Biru Jiang ◽  
...  

2010 ◽  
Vol 404 (1) ◽  
pp. 180-185 ◽  
Author(s):  
Jin Soo Kim ◽  
Chang Won Ahn ◽  
Ill Won Kim ◽  
Sang-Bock Cho ◽  
Chang Hee Chung ◽  
...  

1979 ◽  
Vol 32 (3) ◽  
pp. 201-204 ◽  
Author(s):  
L. Mandel ◽  
RD Tomlinson ◽  
MJ Hampshire ◽  
H Neumann

1984 ◽  
Vol 19 (8) ◽  
pp. 989-997 ◽  
Author(s):  
J.A.K. Tareen ◽  
A. Małecki ◽  
J.P. Doumerc ◽  
J.C. Launay ◽  
P. Dordor ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document