Voltage Drop At Interfaces In Multilayer Ferroelectrics

Based upon a defined surface barrier in ferroelectric multilayers deposited on (100) p-type silicon, xiV(a), which bears a portion of the external electrical voltage, a modified empirical power law I=A(xiV)(n) is established for quantitatively describing detailed I-V dependence in ferroelectric multilayers. The voltage drop at the interface, V-i, which directly affects electrical characteristics of ferroelectric multiplayer system, is studied thoroughly. The voltage drop obtained from the modified empirical power law of the I-V dependence is consistent with that obtained from the C-V dependence model. (C) 2003 American Institute of Physics.