2014
DOI: 10.1021/am502415z
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Energy-Storage Properties and Electrocaloric Effect of Pb(1–3x/2)LaxZr0.85Ti0.15O3 Antiferroelectric Thick Films

Abstract: Antiferroelectric (AFE) thick (1 μm) films of Pb(1-3x/2)LaxZr0.85Ti0.15O3 (PLZT) with x = 0.08, 0.10, 0.12, and 0.14 were deposited on LaNiO3/Si (100) substrates by a sol-gel method. The dielectric properties, energy-storage performance, electrocaloric effect, and leakage current behavior were investigated in detail. With increasing La content, dielectric constant and saturated polarizations of the thick films were gradually decreased. A maximum recoverable energy-storage density of 38 J/cm(3) and efficiency o… Show more

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Cited by 188 publications
(97 citation statements)
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“…as Pb(Zr,Sn,Ti)O 3 , (Pb,La)ZrO 3 and (Pb,La)(Zr,Ti)O 3[10][11][12][13][14][15][16] , which are not environmentally friendly.Obviously, relaxor ferroelectrics stand out and serve as promising candidate materials for energy storage ceramic capacitors.developed. The phase structures, phase transition, dielectric properties, relaxation behavior and energy storage properties were systematically investigated for the first time ever.…”
mentioning
confidence: 99%
“…as Pb(Zr,Sn,Ti)O 3 , (Pb,La)ZrO 3 and (Pb,La)(Zr,Ti)O 3[10][11][12][13][14][15][16] , which are not environmentally friendly.Obviously, relaxor ferroelectrics stand out and serve as promising candidate materials for energy storage ceramic capacitors.developed. The phase structures, phase transition, dielectric properties, relaxation behavior and energy storage properties were systematically investigated for the first time ever.…”
mentioning
confidence: 99%
“…43 Moreover, a giant negative electrocaloric effect (about À5 K) was demonstrated in La-doped Pb(Zr 0.95 Ti 0.05 )O 3 thin films (0.65 lm) near room temperature using indirect method, 29 while only positive electrocaloric effect was reported in La-doped Pb(Zr 0.85 Ti 0.15 )O 3 thin films (1 lm) within the whole temperature of interest including both room temperature and higher temperatures. 39 These inconsistencies in the literature may be probably attributed to (1) the unjustified nature of antiferroelectricity [some PðEÞ loops even show evidence of ferroelectricity or slim relaxor type!] without further evidence of microscopic structure, and (2) inaccurate fits of @P @T E without considering the field-and temperature dependent specific heat and measurement frequency (see Section II F).…”
Section: Negative Electrocaloric Effect In Antiferroelectricsmentioning
confidence: 99%
“…It should be noted that significant ECE was found in some antiferroelectric materials such as PbZrO 3 based materials. [35][36][37] Electrocaloric change of temperature DT calculated based on the Maxwell relation of (@P/@T)E ¼ (@S/@E)T, from the following equation:…”
mentioning
confidence: 99%