Crystallization behaviour and phase coexistence at morphotrophic phase boundaries in PZT thin films prepared by sol-gel processing

1996 ◽  
Vol 31 (14) ◽  
pp. 3639-3642 ◽  
Author(s):  
V. Ontalus ◽  
C. Cobianu ◽  
F. Vasiliu ◽  
C. Parlog
1997 ◽  
Vol 132-136 ◽  
pp. 1131-1134
Author(s):  
F. Vasiliu ◽  
C. Parlog ◽  
C. Cobianu ◽  
A. Ianculescu ◽  
V. Ontalus

1995 ◽  
Vol 7 (1-4) ◽  
pp. 259-277 ◽  
Author(s):  
Robert W. Schwartz ◽  
Timothy J. Boyle ◽  
Steven J. Lockwood ◽  
Michael B. Sinclair ◽  
Duane Dimos ◽  
...  

1995 ◽  
Vol 7 (1-4) ◽  
pp. 247-258 ◽  
Author(s):  
M. Sayer ◽  
G. Yi ◽  
M. Sedlar

1994 ◽  
Vol 361 ◽  
Author(s):  
Wan In Lee ◽  
J.K. Lee ◽  
Elsub Chung ◽  
C.W. Chung ◽  
I.K. Yoo ◽  
...  

ABSTRACTPZT (Zr/Ti = 53/47), PNZT (4% Nb doped PZT), PSZT (2% Sc doped PZT), and PSNZT (1% Sc and 1% Nb doped PZT) thin films were prepared by a sol-gel process. They were characterized by XRD, SEM and TEM. Both crystallographic orientation and grain size of PZT films can be changed by doping. Pt/PZT/Pt capacitors were fabricated for the measurement of ferroelectric properties. By doping with both Sc and Nb, the fatigue performance of the PZT films was considerably improved and the coercive field was decreased, while the remanent polarization was not changed. In addition, the effect of dopants on the leakage current level of PZT films was studied.


1991 ◽  
Vol 243 ◽  
Author(s):  
Keith G. Brooks ◽  
Jiayu Chen ◽  
K. R. Udayakumar ◽  
L. Eric Cross

AbstractLead zirconate titanate thin films containing 0-4 wt.% of 2CdO·B2O3 glass phase additive have been fabricated by sol-gel processing. Smooth dense perovskite films of approximately 3500Å thickness were formed on Si wafers by a multiple layer spin coating process followed by rapid thermal annealing. Remanent polarizations of up to 23μC/cm2 were measured. Hysteresis properties were found to be very sensitive to annealing time at 700°C, with remanence being maximized at 100-200 seconds.


2015 ◽  
Vol 11 ◽  
pp. 386-390 ◽  
Author(s):  
A. Shoghi ◽  
A. Shakeri ◽  
H. Abdizadeh ◽  
M.R. Golobostanfard

1994 ◽  
Vol 361 ◽  
Author(s):  
Chang Jung Kim ◽  
Dae Sung Yoon ◽  
Joon Sung Lee ◽  
Chaun Gi Choi ◽  
Won Jong Lee ◽  
...  

ABSTRACTThe (100), (111) and randomly oriented PZT thin films were fabricated on Pt/Ti/Coming 7059 glass using sol-gel method. The thin films having different orientation were fabricated by different drying conditions for pyrolysis. The preferred orientations of the PZT thin films were observed using XRD, rocking curves, and pole figures. The microstructures were investigated using SEM. The hysteresis loops and capacitance-voltage characteristics of the films were investigated using a standardized ferroelectric test system. The dielectric constant and current-voltage characteristics of the films were investigated using an impedance analyzer and pA meter, respectively. The films oriented in a particular direction showed superior electrical characteristics to the randomly oriented films.


1997 ◽  
Vol 493 ◽  
Author(s):  
Seung-Hyun Kim ◽  
J. G. Hong ◽  
J. C. Gunter ◽  
H. Y. Lee ◽  
S. K. Streiffer ◽  
...  

ABSTRACTFerroelectric PZT thin films on thin RuO2 (10, 30, 50nm)/Pt hybrid bottom electrodes were successfully prepared by using a modified chemical solution deposition method. It was observed that the use of a lOnm RuO2Pt bottom electrode reduced leakage current, and gave more reliable capacitors with good microstructure compare to the use of thicker RuO2/Pt bottom electrodes. Typical P-E hysteresis behavior was observed even at an applied voltage of 3V, demonstrating greatly improved remanence and coercivity. Fatigue and breakdown characteristics, measured at 5V, showed stable behavior, and only below 13-15% degradation was observed up to 1010 cycles. Thicker RuO2 layers resulted in high leakage current density due to conducting lead ruthenate or PZT pyrochlore-ruthenate and a rosette-type microstructure.


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