Ar. Zomorrodian et al., HIGH-TEMPERATURE POLARIZATION RETENTION OF A PB(ZR0.52TI0.48)O-3 YBA2CU3O7-X MEMORY CELL/, Applied physics letters, 69(12), 1996, pp. 1789-1791
Polarization retention for Au/Pb(Zr0.52Ti0.48)O-3/YBa2Cu3O7-x ferroele
ctric capacitors has been studied at elevated temperatures. A device w
ith an effective area of 4 x 10(-3) cm and 1 mu m thickness was fabric
ated, and its retention measured at 150 degrees C and 200 degrees C. T
he retention was studied for two polarization directions in Pb(Zr0.52T
i0.48)O-3 (PZT) by the pyroelectric current and phase detection method
as well as by the conventional double pulse method. A polarization de
gradation of less than 5.5% was detected for PZT at 200 degrees C for
more than 24 h. (C) 1996 American Institute of Physics.