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Progress on electrocaloric multilayer ceramic capacitor development
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DOI：10.1063/1.4950796.png)
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Abstract
En 中文
A multilayer capacitor comprising 19 layers of 38 mu m-thick 0.9Pb(Mg1/3Nb2/3)O-3-0.1PbTiO(3) has elsewhere been shown to display electrocaloric temperature changes of 2.2 K due to field changes of 24 V mu m(-1), near similar to 100 degrees C. Here we demonstrate temperature changes of 1.2 K in an equivalent device with 2.6 times the thermal mass, i.e., 49 layers that could tolerate 10.3 V mu m(-1). Breakdown was compromised by the increased number of layers, and occurred at 10.5 V mu m(-1) near the edge of a near-surface inner electrode. Further optimization is required to improve the breakdown strength of large electrocaloric multilayer capacitors for cooling applications. (C) 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.
Keywords:
DC ELECTRICAL DEGRADATION
PEROVSKITE-TYPE TITANATES
THIN-FILM
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