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Giant Negative Electrocaloric Effect in Anti-Ferroelectric (Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) Ceramics
[Image: see text] A giant electrocaloric effect is reported in (Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) anti-ferroelectric ceramics. These samples were fabricated by a solid-state mixed oxide technique. Dielectric analyses were employed to investigate the anti-ferroelectric (AFE) and ferroelectric (...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6740168/ https://www.ncbi.nlm.nih.gov/pubmed/31528821 http://dx.doi.org/10.1021/acsomega.9b02149 |
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author | Zhao, Ying-Cheng Liu, Qiu-Xiang Tang, Xin-Gui Jiang, Yan-Ping Li, Bi Li, Wen-Hua Luo, Li Guo, Xiao-Bin |
author_facet | Zhao, Ying-Cheng Liu, Qiu-Xiang Tang, Xin-Gui Jiang, Yan-Ping Li, Bi Li, Wen-Hua Luo, Li Guo, Xiao-Bin |
author_sort | Zhao, Ying-Cheng |
collection | PubMed |
description | [Image: see text] A giant electrocaloric effect is reported in (Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) anti-ferroelectric ceramics. These samples were fabricated by a solid-state mixed oxide technique. Dielectric analyses were employed to investigate the anti-ferroelectric (AFE) and ferroelectric (FE) phase transitions of the sample. During the heating process, the phase transition from the orthorhombic anti-ferroelectric phase (AFE(O)) to the tetragonal anti-ferroelectric phase (AFE(T)) occurs at 155 °C, and the phase transition from AFE(T) to PE occurs at 225 °C. Using the Maxwell relationship, the entropy change ΔS and adiabatic temperature change ΔT were obtained at different electric fields ranging from 40 to 65 kV/cm. The maximum adiabatic temperature change (ΔT(max) = −7.47 K) was obtained at 50 kV/cm, which was attributed to the field-induced phase transformation between the anti-ferroelectric and ferroelectric phases. These results showed that PLZT2/95/5 ceramics possess a large negative electrocaloric effect value, which could be applied in achieving cooling power as refrigerants. |
format | Online Article Text |
id | pubmed-6740168 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-67401682019-09-16 Giant Negative Electrocaloric Effect in Anti-Ferroelectric (Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) Ceramics Zhao, Ying-Cheng Liu, Qiu-Xiang Tang, Xin-Gui Jiang, Yan-Ping Li, Bi Li, Wen-Hua Luo, Li Guo, Xiao-Bin ACS Omega [Image: see text] A giant electrocaloric effect is reported in (Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) anti-ferroelectric ceramics. These samples were fabricated by a solid-state mixed oxide technique. Dielectric analyses were employed to investigate the anti-ferroelectric (AFE) and ferroelectric (FE) phase transitions of the sample. During the heating process, the phase transition from the orthorhombic anti-ferroelectric phase (AFE(O)) to the tetragonal anti-ferroelectric phase (AFE(T)) occurs at 155 °C, and the phase transition from AFE(T) to PE occurs at 225 °C. Using the Maxwell relationship, the entropy change ΔS and adiabatic temperature change ΔT were obtained at different electric fields ranging from 40 to 65 kV/cm. The maximum adiabatic temperature change (ΔT(max) = −7.47 K) was obtained at 50 kV/cm, which was attributed to the field-induced phase transformation between the anti-ferroelectric and ferroelectric phases. These results showed that PLZT2/95/5 ceramics possess a large negative electrocaloric effect value, which could be applied in achieving cooling power as refrigerants. American Chemical Society 2019-08-26 /pmc/articles/PMC6740168/ /pubmed/31528821 http://dx.doi.org/10.1021/acsomega.9b02149 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Zhao, Ying-Cheng Liu, Qiu-Xiang Tang, Xin-Gui Jiang, Yan-Ping Li, Bi Li, Wen-Hua Luo, Li Guo, Xiao-Bin Giant Negative Electrocaloric Effect in Anti-Ferroelectric (Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) Ceramics |
title | Giant Negative Electrocaloric Effect in Anti-Ferroelectric
(Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) Ceramics |
title_full | Giant Negative Electrocaloric Effect in Anti-Ferroelectric
(Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) Ceramics |
title_fullStr | Giant Negative Electrocaloric Effect in Anti-Ferroelectric
(Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) Ceramics |
title_full_unstemmed | Giant Negative Electrocaloric Effect in Anti-Ferroelectric
(Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) Ceramics |
title_short | Giant Negative Electrocaloric Effect in Anti-Ferroelectric
(Pb(0.97)La(0.02))(Zr(0.95)Ti(0.05))O(3) Ceramics |
title_sort | giant negative electrocaloric effect in anti-ferroelectric
(pb(0.97)la(0.02))(zr(0.95)ti(0.05))o(3) ceramics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6740168/ https://www.ncbi.nlm.nih.gov/pubmed/31528821 http://dx.doi.org/10.1021/acsomega.9b02149 |
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