The field-induced transition, which is useful for converting between electrical and thermal energy, was induced in artificially designed complementary-metal–oxide–semiconductor-compatible HfO2/ZrO2 nanolaminates. The electrocaloric effect in HfO2/ZrO2 nanolaminates was affected by the stacking order, attributed to differences in the relative fraction of the nonferroelectric monoclinic phase, and by the aspect ratio, reflecting crystallographic similarities to the tetragonal or orthorhombic phase. An adiabatic temperature change of up to 12.25 K was achieved using a HfO2/ZrO2 bilayer sample. Furthermore, as an electrostatic supercapacitor, the energy storage density reached 49.90 J/cm3.
|Journal||Composites Part B: Engineering|
|Publication status||Published - 2022 May 1|
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea funded by the Ministry of Science and ICT (Grant Nos. 2020R1C1C1008193 , 2020M3F3A2A01081593 , and 2021M3F3A2A02037889 ). MHP is supported by the POSCO Science Fellowship of the TJ Park Science Foundation. KY is supported by the BK21 FOUR Program by Pusan National University Research Grant, 2021 .
© 2022 Elsevier Ltd
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering