Ultrahigh pyroelectric effect and energy harvesting density of Pb(Lu1/2Nb1/2)O3–PbTiO3 crystals induced by FE-AFE phase transition
In: Journal of Rare Earths, Jg. 39 (2021-12-01), S. 1567-1573
Online
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Zugriff:
Large pyroelectric and energy harvesting properties have been attracting increasing attentions due to the practical applications in infrared detectors and energy harvesting technologies. Ferroelectric-antiferroelectric (FE-AFE) phase transitions are usually accompanied by a sharp drop in polarization, which will lead to excellent pyroelectric properties and energy harvesting density. Therefore, FE-AFE phase boundary design is an effective strategy to develop new pyroelectric materials. In this paper, Pb(Lu1/2Nb1/2)O3-PbTiO3 (PLN-PT) single crystals with FE-AFE phase transitions were obtained by molten salt growth method. The temperature-induced FE-AFE phase transition was verified by temperature-dependent macrodomain structure, DSC curves and dielectric properties. Obviously, PLN-PT crystals display excellent peak pyroelectric coefficient (∼6.8 μC/(cm2·K)) with a maximum depolarization temperature of 118 °C. Meanwhile, the pyroelectric energy harvesting density is as high as 2.62 J/cm3, which is much higher than other pyroelectric materials. The results reveal that the PLN-PT crystal is a promising candidate for infrared detectors and energy harvesting devices.
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Ultrahigh pyroelectric effect and energy harvesting density of Pb(Lu1/2Nb1/2)O3–PbTiO3 crystals induced by FE-AFE phase transition
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Autor/in / Beteiligte Person: | Su, Rongbing ; He, Chao ; Liu, Manman ; Liu, Ying ; Lv, Lingfei ; Yang, Xiaoming ; Wang, Zujian ; Long, Xifa |
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Zeitschrift: | Journal of Rare Earths, Jg. 39 (2021-12-01), S. 1567-1573 |
Veröffentlichung: | Elsevier BV, 2021 |
Medientyp: | unknown |
ISSN: | 1002-0721 (print) |
DOI: | 10.1016/j.jre.2021.03.019 |
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