X7R dielectric multilayer ceramic capacitors show good micro‐actuating properties with little hysteresis | Zendy

Chen Jian | Zendy; Feng Zhihua | Zendy

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X7R 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.

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