Open AccessX7R dielectric multilayer ceramic capacitors show good micro‐actuating properties with little hysteresis
Author(s) -
Chen Jian,
Feng Zhihua
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.3815
Subject(s) - ceramic capacitor , capacitor , hysteresis , materials science , dielectric , ceramic , film capacitor , optoelectronics , electronic engineering , composite material , electrical engineering , voltage , engineering , condensed matter physics , physics
The possibility of a kind of industrial‐grade X7R type multilayer ceramic capacitor used as an actuator is studied. By applying a DC bias voltage, the ceramic capacitors exhibit a large converse piezoelectric effect which can be used for actuating applications. The experiments show that the capacitor's thickness changes rather linearly with a voltage applied on it. Three multilayer ceramic capacitors were selected to be studied. A hysteresis <1.8% and a nonlinearity <2.0% between the displacement and the driving voltage were observed for a 10 μF capacitor over a frequency range of 0.1–20 Hz and a temperature range of 15–35°C.