scholarly journals Giant electrocaloric effect in ferroelectric nanotubes near room temperature

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Man Liu ◽  
Jie Wang
Keyword(s):  
Room Temperature ◽  
Electrocaloric Effect

Room‐Temperature Symmetric Giant Positive and Negative Electrocaloric Effect in PbMg 0.5 W 0.5 O 3 Antiferroelectric Ceramic

2021 ◽  
pp. 2101176
Author(s):  
Junjie Li ◽  
Hong‐Hui Wu ◽  
Jianting Li ◽  
Xiaopo Su ◽  
Ruowei Yin ◽  
...  
Keyword(s):  
Room Temperature ◽  
Electrocaloric Effect

Enhanced electrocaloric effect in lead-free organic and inorganic relaxor ferroelectric composites near room temperature

2018 ◽  
Vol 112 (19) ◽  
pp. 193902 ◽  
Author(s):  
Haibibu Aziguli ◽  
Xin Chen ◽  
Yang Liu ◽  
Guang Yang ◽  
Ping Yu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Relaxor Ferroelectric ◽  
Lead Free ◽  
Electrocaloric Effect

Electrocaloric Effect of (110) Oriented KNbO3 Film

2021 ◽  
Vol 21 (10) ◽  
pp. 5247-5252
Author(s):  
MinYa Jin ◽  
JianHua Qiu ◽  
ZhiHui Chen ◽  
XiuQin Wang ◽  
NingYi Yuan ◽  
...  
Keyword(s):  
Electric Field ◽  
Thermodynamic Equilibrium ◽  
Thermodynamic Potential ◽  
Room Temperature ◽  
Misfit Strain ◽  
Equilibrium Conditions ◽  
Electrocaloric Effect ◽  
Phase Map ◽  
The Stability

The room temperature electrocaloric effect is researched for (110) oriented KNbO3 film based on Landau-Devonshire theory. The phase map with different ferroelectric states is built at room temperature with the considerations of thermodynamic equilibrium conditions and minimum of thermodynamic potential. Five ferroelectric structural phases are obtained theoretically. The negative in-plane misfit strains are conducive to form the tetragonal c phase and the positive strains are in favor of the stability of tetragonal a1 and a2 phases. The electrocaloric effect relies on both misfit strain and electric field. Moreover, large electrocaloric effect is achieved in the orthorhombic phases.

Giant Negative Electrocaloric Effect in (Pb,La)(Zr,Sn,Ti)O3 Antiferroelectrics Near Room Temperature

2018 ◽  
Vol 10 (14) ◽  
pp. 11747-11755 ◽  
Author(s):  
Fangping Zhuo ◽  
Qiang Li ◽  
Jinghan Gao ◽  
Yongjie Ji ◽  
Qingfeng Yan ◽  
...  
Keyword(s):  
Room Temperature ◽  
Electrocaloric Effect

scholarly journals Large room-temperature electrocaloric effect in lead-free BaHf Ti O3 ceramics under low electric field

2016 ◽  
Vol 115 ◽  
pp. 58-67 ◽  
Author(s):  
Junning Li ◽  
Dawei Zhang ◽  
Shiqiang Qin ◽  
Tangyuan Li ◽  
Ming Wu ◽  
...  
Keyword(s):  
Electric Field ◽  
Room Temperature ◽  
Lead Free ◽  
Electrocaloric Effect

scholarly journals Giant electrocaloric effect in the thin film relaxor ferroelectric 0.9PbMg1∕3Nb2∕3O3–0.1PbTiO3 near room temperature

2006 ◽  
Vol 89 (24) ◽  
pp. 242912 ◽  
Author(s):  
A. S. Mischenko ◽  
Q. Zhang ◽  
R. W. Whatmore ◽  
J. F. Scott ◽  
N. D. Mathur
Keyword(s):  
Thin Film ◽  
Room Temperature ◽  
Relaxor Ferroelectric ◽  
Electrocaloric Effect

Detecting giant electrocaloric properties of ferroelectric SbSI at room temperature

2013 ◽  
Vol 03 (02) ◽  
pp. 1350008 ◽  
Author(s):  
Mahmoud A. Hamad
Keyword(s):  
Thin Film ◽  
Electric Field ◽  
Room Temperature ◽  
Operating Temperature ◽  
Electrocaloric Effect ◽  
Cooling Systems ◽  
Field Shift

In this work, ferroelectric SbSI shows a giant electrocaloric effect at room temperature under very low electric field shift of 0.37 kV cm-1. It is shown that the cooling ΔT per unit field MVm-1 is 2.97. This value is significantly larger, and is comparable with the value of 0.254 for PbZr 0.95 Ti 0.05 O 3 thin film under electric field shift of 30 kV cm-1. Moreover, the reduction in operating temperature opens up many more possibilities and widens the potential for applications in cooling systems.

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