Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) P∼E hysteresis loops measured at different temperatures along the c axis by the Sawyer-Tower circuit method. (b) P∼E hysteresis loops measured along the c axis at room temperature by using the double-wave method. (c) Polarization as a function determined by the measurement of the pyroelectric effect.
