ZhETF, Vol. 127,
p. 471 (February 2005)
(English translation - JETP,
Vol. 100, No. 2,
available online at www.springer.com
PYROELECTRIC AND ELECTROMECHANICAL PROPERTIES OF ANTIFERROELECTRIC LIQUID CRYSTAL MHPOBC
Yablonskii S.V., Nakano K., Ozaki M., Yoshino K.
Received: June 30, 2004
PACS: 64.70.Md, 68.15.+e, 62.30.+d
We study pyroelectric and electromechanical effects in the prototype antiferroelectric liquid crystal 4-(1-methylheptyloxycarbonyl-phenyl)4'-octylbiphenil-4-carboxylate (MHPOBC). The linear electromechanical effect in the freely suspended liquid crystal films of MHPOBC has been detected in the broad temperature range inclusive of the antiferroelectric SmCA* as well as paralelectric SmA. The anomalous behavior of the hysteresis loop of SmCβ* in the (pyroelectric coefficient, dc bias electric voltage) coordinates has been found.