Room temperature giant electrocaloric properties of relaxor ferroelectric 0.93PMN-0.07PT thin film
Author(s) -
Mahmoud A. Hamad
Publication year - 2013
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4795156
Subject(s) - electrocaloric effect , curie temperature , materials science , ferroelectricity , thin film , electric field , condensed matter physics , curie , optoelectronics , nanotechnology , ferromagnetism , physics , dielectric , quantum mechanics
In this paper, 0.93PMN-0.07PT thin film shows a giant electrocaloric effect at room temperature. At electric field shift of 723 kV/cm, the peak value of ΔS of 0.93PMN-0.07PT thin film is 13.05 J/K.kg. The largest change (12.24 °C in 15.18 V, i.e. 0.8 K/V) at TC = 27 °C is more than the previous results obtained in giant electrocaloric PbZr0.95Ti0.05O3 films near the ferroelectric Curie temperature of 222°C (12 K in 25 V, i.e. 0.48 K/V) [A.S. Mischenko, et.al. Science 311, 1270 (2006)]
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