11:15 AM - 11:30 AM
△ [16a-416-9] Field Modulation Imaging of Domain-Wall Structures in Organic Ferroelectrics
Keywords:organic ferroelectrics, observation of ferroelectric domain motion, domain observation technique of ferroelectrics
Recently, proton-transfer type organic ferroelectrics which have small coercive electric field have been reported and are expected to be key materials for low voltage driving devices. For the development of devices, observation of domain motion in single crystal thin films is inevitable.
So far, we have developed an optical technique “Ferroelectrics field modulation imaging (FFMI)” in order to visualize the domain structure, which detects the change of optical spectrum induced by modulation electric field by using an area imaging sensor.
This time, we observed the dynamics of domain motion in thin films using FFMI. In addition, we focused on domain walls and analyzed the intensity distribution of FFMI signal across them because FFMI signal indicate the domain structure in the thickness direction of films. On the day, we discuss the broad domain walls due to the lap of polarization, and the motion of domain walls.
So far, we have developed an optical technique “Ferroelectrics field modulation imaging (FFMI)” in order to visualize the domain structure, which detects the change of optical spectrum induced by modulation electric field by using an area imaging sensor.
This time, we observed the dynamics of domain motion in thin films using FFMI. In addition, we focused on domain walls and analyzed the intensity distribution of FFMI signal across them because FFMI signal indicate the domain structure in the thickness direction of films. On the day, we discuss the broad domain walls due to the lap of polarization, and the motion of domain walls.