Ch. Yang et al., ELECTRICAL-PROPERTIES OF SRBI2TA2O9 THIN-FILMS DEPOSITED BY RF MAGNETRON SPUTTERING, Integrated ferroelectrics, 18(1-4), 1997, pp. 377-387
Ferroelectric bismuth layer oxide SrBi2Ta2O9(SBT) thin films were depo
sited on Pt/Ti/SiO2/Si substrates by rf magnetron sputtering at 500 de
grees C and then, were annealed at 850 degrees C for 1 hr in oxygen am
bient. The remanent polarization(2P(r)) and the coercive field(2E(c))
of a 300nm thick SBT film deposited in 10mtorr were 18.5 mu C/cm(2) an
d 150kV/cm at an applied voltage of 5V, respectively. The SET films sh
owed a fatigue-free characteristics up to 10(10) cycles under 5V bipol
ar pulse. The leakage current density of the SET films were about 8.6
x 10(-8) A/cm(2) at 100kV/cm.