DOI: 10.1002/adfm.201202525. A Giant Electrocaloric Effect in Nanoscale Antiferroelectric and Ferroelectric Phases Coexisting in a Relaxor Pb0.8Ba0.2ZrO3 Thin Film at Room Temperature

A Giant Electrocaloric Effect in Nanoscale Antiferroelectric and Ferroelectric Phases Coexisting in a Relaxor Pb0.8Ba0.2ZrO3 Thin Film at Room Temperature

10.1002/adfm.201202525

Crossref journal-article

Wiley

Advanced Functional Materials (311)

Abstract

AbstractRecently, large electrocaloric effects (ECE) in antiferroelectric sol‐gel PbZr0.95Ti0.05O3 thin films and in ferroelectric polymer P(VDF‐TrFE)55/45 thin films were observed near the ferroelectric Curie temperatures of these materials (495 K and 353 K, respectively). Here a giant ECE (ΔT = 45.3 K and ΔS = 46.9 J K−1 kg−1 at 598 kV cm−1) is obtained in relaxor ferroelectric Pb0.8Ba0.2ZrO3 (PBZ) thin films fabricated on Pt(111)/TiOx/SiO2/Si substrates using a sol‐gel method. Nanoscale antiferroelectric (AFE) and ferroelectric (FE) phases coexist at room temperature (290 K) rather than at the Curie temperature (408 K) of the material. The giant ECE in such a system is attributed to the coexistence of AFE and FE phases and a field‐induced nanoscale AFE to FE phase transition. The giant ECE of the thin film makes this a promising material for applications in cooling systems near room temperature.

Bibliography

Peng, B., Fan, H., & Zhang, Q. (2013). A Giant Electrocaloric Effect in Nanoscale Antiferroelectric and Ferroelectric Phases Coexisting in a Relaxor Pb0.8Ba0.2ZrO3 Thin Film at Room Temperature. Advanced Functional Materials, 23(23), 2987â2992. Portico.

Authors 3

Biaolin Peng (first)
Huiqing Fan (additional)
Qi Zhang (additional)

References 35 Referenced 332

Dates

Type	When
Created	12 years, 7 months ago (Jan. 20, 2013, 6:40 p.m.)
Deposited	1 year, 10 months ago (Oct. 11, 2023, 7:44 a.m.)
Indexed	13 hours, 32 minutes ago (Aug. 29, 2025, 5:46 a.m.)
Issued	12 years, 7 months ago (Jan. 20, 2013)
Published	12 years, 7 months ago (Jan. 20, 2013)
Published Online	12 years, 7 months ago (Jan. 20, 2013)
Published Print	12 years, 2 months ago (June 20, 2013)

Funders 0

None

BibTeX

@article{Peng_2013, title={A Giant Electrocaloric Effect in Nanoscale Antiferroelectric and Ferroelectric Phases Coexisting in a Relaxor Pb0.8Ba0.2ZrO3 Thin Film at Room Temperature}, volume={23}, ISSN={1616-3028}, url={http://dx.doi.org/10.1002/adfm.201202525}, DOI={10.1002/adfm.201202525}, number={23}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Peng, Biaolin and Fan, Huiqing and Zhang, Qi}, year={2013}, month=jan, pages={2987–2992} }

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  "abstract": "<jats:title>Abstract</jats:title><jats:p>Recently, large electrocaloric effects (ECE) in antiferroelectric sol\u2010gel PbZr<jats:sub>0.95</jats:sub>Ti<jats:sub>0.05</jats:sub>O<jats:sub>3</jats:sub> thin films and in ferroelectric polymer P(VDF\u2010TrFE)55/45 thin films were observed near the ferroelectric Curie temperatures of these materials (495 K and 353 K, respectively). Here a giant ECE (\u0394<jats:italic>T</jats:italic> = 45.3 K and \u0394<jats:italic>S</jats:italic> = 46.9 J K<jats:sup>\u22121</jats:sup> kg<jats:sup>\u22121</jats:sup> at 598 kV cm<jats:sup>\u22121</jats:sup>) is obtained in relaxor ferroelectric Pb<jats:sub>0.8</jats:sub>Ba<jats:sub>0.2</jats:sub>ZrO<jats:sub>3</jats:sub> (PBZ) thin films fabricated on Pt(111)/TiO<jats:sub>x</jats:sub>/SiO<jats:sub>2</jats:sub>/Si substrates using a sol\u2010gel method. Nanoscale antiferroelectric (AFE) and ferroelectric (FE) phases coexist at room temperature (290 K) rather than at the Curie temperature (408 K) of the material. The giant ECE in such a system is attributed to the coexistence of AFE and FE phases and a field\u2010induced nanoscale AFE to FE phase transition. The giant ECE of the thin film makes this a promising material for applications in cooling systems near room temperature.</jats:p>",
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