Publication Date:
2015-05-26
Description:
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.
Print ISSN:
1546-542X
Electronic ISSN:
1744-7402
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
