Lead-free (Ba,Ca)(Zr,Ti)O3 Based Electrocaloric Devices: Challenges and Perspectives

2013 ◽  
Vol 1581 ◽  
Author(s):  
Gunnar Suchaneck ◽  
Gerald Gerlach
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Electric Fields ◽  
Diffuse Phase Transition ◽  
Lead Free ◽  
Large Temperature ◽  
Temperature Changes ◽  
Diffuse Phase

ABSTRACTIn this work, we analyze the requirement to (Ba,Ca)(Zr,Ti)O3 thin films for applications in electrocaloric devices. We demonstrate that large temperature changes are realized mostly independent of the used material by applying sufficient electric fields. Ferroelectrics exhibiting a diffuse phase transition are beneficial for electrocaloric applications, but they change the range of operational temperatures.

scholarly journals Diffuse phase transition of BST thin films in the microwave domain

2018 ◽  
Vol 112 (26) ◽  
pp. 262901 ◽  
Author(s):  
Kevin Nadaud ◽  
Caroline Borderon ◽  
Raphaël Renoud ◽  
Areski Ghalem ◽  
Aurelian Crunteanu ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Bst Thin Films ◽  
Diffuse Phase

Diffuse phase transition in Nb-doped BaTi2O5 thin films

2019 ◽  
Vol 30 (15) ◽  
pp. 14424-14429
Author(s):  
Lingtong Kuang ◽  
Ying Dai ◽  
Xinmei Pei ◽  
Wen Chen
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Diffuse Phase

Diffuse Phase Transition and Dielectric Properties of Lead-Free Zr-Doped BCTS Ceramics

2017 ◽  
Vol 866 ◽  
pp. 259-262 ◽  
Author(s):  
Puripat Kantha ◽  
Kamonpan Pengpat ◽  
Nuttapon Pisitpipathsin
Keyword(s):  
Phase Transition ◽  
Dielectric Constant ◽  
Diffuse Phase Transition ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Phase Transition Behavior ◽  
Conventional Solid State Reaction ◽  
Maximum Dielectric Constant ◽  
Cubic Structure ◽  
Diffuse Phase

Lead-free Ba0.9Ca0.1Sn0.06Ti0.94-xZrxO3 (BCTSZ) ceramics where x = 0.00, 0.03, 0.05, 0.07 and 0.09 were prepared by the conventional solid-state reaction method. The dielectric constant of the Zr doped BCTS ceramic was enhanced by Zr incorporation. The maximum dielectric constant were obtained at the composition of x = 0.05. The dielectric property investigation indicated that the degree of the diffuse phase transition behavior increased with Zr substitution. Phase transition of tetragonal to cubic structure was significantly dependent on the amount of Zr added.

Diffuse phase transition of sol-gel deposited BaFexTi2-xO5 thin films

2017 ◽  
Vol 727 ◽  
pp. 370-374 ◽  
Author(s):  
Yaxiong Wu ◽  
Ying Dai ◽  
Ling Huang ◽  
Xinmei Pei ◽  
Wen Chen
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Sol Gel ◽  
Diffuse Phase

Diffuse phase transition and relaxor behavior in (PbLa)TiO3 thin films

2002 ◽  
Vol 80 (21) ◽  
pp. 3997-3999 ◽  
Author(s):  
S. Bhaskar ◽  
S. B. Majumder ◽  
R. S. Katiyar
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Relaxor Behavior ◽  
Diffuse Phase

A Raman and dielectric study of a diffuse phase transition in (Pb1-xCax)TiO3 thin films

2004 ◽  
Vol 78 (3) ◽  
pp. 349-354 ◽  
Author(s):  
F.M. Pontes ◽  
D.S.L. Pontes ◽  
E.R. Leite ◽  
E. Longo ◽  
A.J. Chiquito ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Dielectric Study ◽  
Diffuse Phase
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