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Updated: Aug 16, 2025

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
High-Speed and High-Power Ferroelectric Switching Current Measurement Instrument for Materials with Large Coercive
Keisuke Yazawa1,2, Andriy Zakutayev2, Geoff L Brennecka1
1Department of Metallurgical and Materials Engineering, Colorado School of Mines, Golden, CO 80401, USA.
Abstract:
A high-speed and high-power current measurement instrument is described for measuring rapid switching of ferroelectric samples with large spontaneous polarization and coercive field. Instrument capabilities (±200 V, 200 mA, and 200 ns order response) are validated with a LiTaO3 single crystal whose switching kinetics are well known. The new instrument described here enables measurements that are not possible using existing commercial measurement systems, including the observation of ferroelectric switching in large coercive field and large spontaneous polarization Al0.7Sc0.3N thin films.
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