Title :
Distribution of space charge and its effect on micro-macro domain transition of PLZT 8/65/35
Author :
Zhongyang, Cheng ; Liangying, Zhang ; Xi Yao
Author_Institution :
Electron. Mater. Res. Lab., Xi´´an Jiaotong Univ., China
Abstract :
The space charge distribution of PLZT 8/65/35 was measured by the LIMM (laser intensity modulation method). It is concluded that space charge movement in PLZT 8/65/35 is very difficult at temperatures below 50°C and is easy above 50°C. A detailed discussion of the effect of space charge on the micro-macro domain transition is given. The large difference of dielectric anomalous temperature Td measured on heating and cooling is mainly due to the effect of space charge; the abrupt disappearance of dielectric dispersion at T d under DC bias is also due to the space charge effect
Keywords :
electrets; ferroelectric transitions; lead compounds; permittivity; space charge; 50 degC; LIMM; PLZT; PbLaZrO3TiO3; dielectric anomalous temperature; dielectric dispersion; electret; laser intensity modulation method; micro-macro domain transition; space charge; Charge measurement; Cooling; Current measurement; Dielectric measurements; Dispersion; Intensity modulation; Laser transitions; Space charge; Space heating; Temperature;
Conference_Titel :
Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)
Conference_Location :
Berlin
Print_ISBN :
0-7803-0112-9
DOI :
10.1109/ISE.1991.167244
