scholarly journals Bipolar electrocaloric effect in Pb1−Gd (Mg1+/3Nb2–/3)O3 ceramic: Relaxor with super-dipolar glass state

2019 ◽  
Vol 162 ◽  
pp. 1-4 ◽  
Author(s):  
Adityanarayan H. Pandey ◽  
A.M. Awasthi ◽  
Surya Mohan Gupta
Keyword(s):  
Electrocaloric Effect ◽  
Glass State

Adjustable negative electrocaloric effect in Pb1+xZrO3 thin films

2021 ◽  
Author(s):  
Yi Ye ◽  
Fengzhen Huang ◽  
Lin Lei ◽  
Lin Liu ◽  
Shuo Yan ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrocaloric Effect

scholarly journals A unified perturbative approach to electrocaloric effects

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Mónica Graf ◽  
Jorge Íñiguez
Keyword(s):  
External Field ◽  
Taylor Series ◽  
Physical Interpretation ◽  
Applied Field ◽  
Atomistic Simulations ◽  
Small Field ◽  
Electrocaloric Effect ◽  
Perturbative Approach ◽  
Similarities And Differences ◽  
Straightforward Interpretation

AbstractThe electrocaloric effect, that is, the temperature change experienced by an insulator upon application of an electric field, offers promising ecofriendly alternatives to refrigeration. However, the theoretical treatments of this response are mostly case specific and lack a unified picture revealing the similarities and differences among the various known effects. Here, we show that the electrocaloric effect lends itself to a straightforward interpretation when expressed as a Taylor series in the external field. Our formalism explains in a unified and simple way the most notable small-field effects reported in the literature, namely the so-called normal and inverse electrocaloric responses, corresponding to an increase or decrease of temperature under applied field, as usually found in ferroelectrics or antiferroelectrics, respectively. This helps us to clarify their physical interpretation. We then discuss in detail atomistic simulations for the prototype ferroelectric PbTiO3, explicitly evaluating subtle predictions of the theory, such as the occurrence of competing contributions to the electrocaloric response.

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

scholarly journals Evidence for a Quasi-Two-Dimensional Proton Glass State inCs5H3(SO4)4̇xH2OCrystals

2001 ◽  
Vol 86 (13) ◽  
pp. 2838-2841 ◽  
Author(s):  
S. G. Lushnikov ◽  
S. N. Gvasaliya ◽  
A. I. Fedoseev ◽  
V. H. Schmidt ◽  
G. F. Tuthill ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Glass State

Spin-glass state induced low field magnetization-step effect in a Hg1−x Mn x Te single crystal

2016 ◽  
Vol 253 (10) ◽  
pp. 2015-2019
Author(s):  
Liangqing Zhu ◽  
Jun Shao ◽  
Liang Zhu ◽  
Xiren Chen ◽  
Tie Lin ◽  
...  
Keyword(s):  
Single Crystal ◽  
Spin Glass ◽  
Spin Glass State ◽  
Glass State ◽  
Low Field ◽  
Field Magnetization ◽  
Step Effect

Fluctuation conductivity and the chiral glass state in disordered YBa2Cu3O6+d thin films

2015 ◽  
Vol 517 ◽  
pp. 49-52 ◽  
Author(s):  
P.A. Sobocinski ◽  
P.L. Grande ◽  
P. Pureur
Keyword(s):  
Thin Films ◽  
Fluctuation Conductivity ◽  
Glass State ◽  
Chiral Glass
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