  We measured the intrinsic hysteretic polarization in lossy improper and
nanoferroelectric systems where the nonhysteretic polarization and leakage are
large and the relaxation takes place over a broader time scale. We used
different measurement protocols such as standard single triangular voltage
pulse, a pulse train of PUND (Positive Up Negative Down), and an even more
complicated pulse train of fourteen voltage pulses and compared the results
obtained. We show that a protocol which sends a train of fourteen pulses is
more appropriate for extracting relaxed (i.e., time scale independent) and
intrinsic remanent polarization for these samples. We also point out that it is
possible to select and design an appropriate measurement protocol depending on
the magnitude of polarization and leakage of the system.
