Strain-induced broadening temperature range of electrocaloric effects in ferroelectric superlattices

Xiaohui Sun; Houbing Huang; Junsheng Wang; Yongqiang Wen; Zhi Min Dang

doi:10.1016/j.jallcom.2018.10.397

Strain-induced broadening temperature range of electrocaloric effects in ferroelectric superlattices

Xiaohui Sun, Houbing Huang^*, Junsheng Wang, Yongqiang Wen, Zhi Min Dang

^*Corresponding author for this work

Advanced Research Institute of Multidisciplinary Science

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Motivated by a broad temperature span, we performed a strain-induced broadening temperature range of electrocaloric effects in PbZr_0.6Ti_0.4O₃/PbTiO₃ ferroelectric superlattices based on phenomenological Landau-Devonshire thermodynamic theory. The results indicated that interlayer misfit strain and substrate misfit strain in superlattices modulate the Curie temperature. Considering two types of strains coexist in ferroelectric superlattices, there exist a balance between interlayer misfit strain and substrate misfit strain to broaden temperature range (281 K) of electrocaloric effects. The present study therefore contributes to the understanding of strain effects of electrocaloric cooling and provides guidance towards experimental design of high efficiency cooling devices.

Original language	English
Pages (from-to)	821-827
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	777
DOIs	https://doi.org/10.1016/j.jallcom.2018.10.397
Publication status	Published - 10 Mar 2019

Keywords

Electrocaloric effect
Ferroelectric superlattices
Strain-broadening temperature range
Thermodynamic calculation

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10.1016/j.jallcom.2018.10.397

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title = "Strain-induced broadening temperature range of electrocaloric effects in ferroelectric superlattices",

abstract = "Motivated by a broad temperature span, we performed a strain-induced broadening temperature range of electrocaloric effects in PbZr0.6Ti0.4O3/PbTiO3 ferroelectric superlattices based on phenomenological Landau-Devonshire thermodynamic theory. The results indicated that interlayer misfit strain and substrate misfit strain in superlattices modulate the Curie temperature. Considering two types of strains coexist in ferroelectric superlattices, there exist a balance between interlayer misfit strain and substrate misfit strain to broaden temperature range (281 K) of electrocaloric effects. The present study therefore contributes to the understanding of strain effects of electrocaloric cooling and provides guidance towards experimental design of high efficiency cooling devices.",

keywords = "Electrocaloric effect, Ferroelectric superlattices, Strain-broadening temperature range, Thermodynamic calculation",

author = "Xiaohui Sun and Houbing Huang and Junsheng Wang and Yongqiang Wen and Dang, {Zhi Min}",

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T1 - Strain-induced broadening temperature range of electrocaloric effects in ferroelectric superlattices

AU - Sun, Xiaohui

AU - Huang, Houbing

AU - Wang, Junsheng

AU - Wen, Yongqiang

AU - Dang, Zhi Min

PY - 2019/3/10

Y1 - 2019/3/10

N2 - Motivated by a broad temperature span, we performed a strain-induced broadening temperature range of electrocaloric effects in PbZr0.6Ti0.4O3/PbTiO3 ferroelectric superlattices based on phenomenological Landau-Devonshire thermodynamic theory. The results indicated that interlayer misfit strain and substrate misfit strain in superlattices modulate the Curie temperature. Considering two types of strains coexist in ferroelectric superlattices, there exist a balance between interlayer misfit strain and substrate misfit strain to broaden temperature range (281 K) of electrocaloric effects. The present study therefore contributes to the understanding of strain effects of electrocaloric cooling and provides guidance towards experimental design of high efficiency cooling devices.

AB - Motivated by a broad temperature span, we performed a strain-induced broadening temperature range of electrocaloric effects in PbZr0.6Ti0.4O3/PbTiO3 ferroelectric superlattices based on phenomenological Landau-Devonshire thermodynamic theory. The results indicated that interlayer misfit strain and substrate misfit strain in superlattices modulate the Curie temperature. Considering two types of strains coexist in ferroelectric superlattices, there exist a balance between interlayer misfit strain and substrate misfit strain to broaden temperature range (281 K) of electrocaloric effects. The present study therefore contributes to the understanding of strain effects of electrocaloric cooling and provides guidance towards experimental design of high efficiency cooling devices.

KW - Electrocaloric effect

KW - Ferroelectric superlattices

KW - Strain-broadening temperature range

KW - Thermodynamic calculation

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DO - 10.1016/j.jallcom.2018.10.397

M3 - Article

AN - SCOPUS:85056219092

SN - 0925-8388

VL - 777

SP - 821

EP - 827

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Strain-induced broadening temperature range of electrocaloric effects in ferroelectric superlattices

Abstract

Keywords

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