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Electrocaloric Behavior and Temperature‐Dependent Scaling of Dynamic Hysteresis of Ba 0.85 Ca 0.15 Ti 0.9 Zr 0.1 O 3 Ceramics
Author(s) -
Patel Satyanarayan,
Chauhan Aditya,
Vaish Rahul
Publication year - 2015
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12418
Subject(s) - electrocaloric effect , scaling , materials science , hysteresis , ferroelectricity , condensed matter physics , exponent , adiabatic process , coercivity , electric field , polarization (electrochemistry) , thermodynamics , maxwell relations , physics , dielectric , mathematics , quantum mechanics , chemistry , linguistics , philosophy , geometry , optoelectronics , inhomogeneous electromagnetic wave equation , optical field
This article presents electrocaloric effect in Ba 0.85 Ca 0.15 Ti 0.9 Zr 0.1 O 3 ( BCTZO ) using an indirect approach based on Maxwell's relations. The peak electrocaloric performance is found to be an adiabatic temperature change of 0.41 K with electrocaloric strength of 19 mK cm/kV and a heat carrying capacity of ~0.17 J/g under an electric field of 0–21.5 kV/cm. The ferroelectric hysteresis scaling relations for coercive field ( E C ), remnant polarization ( P r ), and hysteresis area (< A >) as a function of temperature ( T ) are also systematically investigated. The power‐law temperature exponents are obtained for all the hysteresis parameters. The scaling relations are established as E c ∝ T −0.6584 , P r ∝ T −1.59 , and < A > ∝ T −1.01623 . The presented scaling relations are compared with those reported in the literature for other ferroelectric materials.