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Electrocaloric Materials: Giant Electrocaloric Response Over A Broad Temperature Range in Modified BaTiO 3 Ceramics (Adv. Funct. Mater. 9/2014)
Author(s) -
Qian XiaoShi,
Ye HuiJian,
Zhang YingTang,
Gu Haiming,
Li Xinyu,
Randall C. A.,
Zhang Q. M.
Publication year - 2014
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201470060
Subject(s) - materials science , electrocaloric effect , tetragonal crystal system , orthorhombic crystal system , ceramic , atmospheric temperature range , trigonal crystal system , dipole , pyroelectricity , composite material , condensed matter physics , optoelectronics , crystal structure , thermodynamics , optics , diffraction , ferroelectricity , crystallography , dielectric , chemistry , physics , organic chemistry
On page 1300, by modifying BaTiO 3 ceramics to their invariant critical points, Ba(ZrxTi 1−x )O 3 bulk ceramics exhibit a large electrocaloric effect (ECE). Q. M. Zhang and co‐workers show tetragonal, orthorhombic, and rhombohedral structures behind a larger cubic structure, with dipoles inside. A flat‐panel cooling device is schematically drawn as a 3D multi‐layered ECE cooling device. The temperature gradient is shown by rainbow color, in which blue indicates the cold end and the other warmer colors indicate higher temperatures.