Simultaneously achieved large electrocaloric effect and broad working temperature range in transparent Sm-doped 0.88 Pb(Mg1/3Nb2/3)O3-0.12PbTiO3 ceramics at low electric field

Ceramics International(2024)

引用 0|浏览3
暂无评分
摘要
Electrocaloric refrigeration technology has garnered significant attention due to its potential for next-generation solid-state cooling, which is miniaturized and efficient. However, achieving a substantial electrocaloric effect (ECE) and a wide working temperature range at low electric fields remains a challenge. In this study, a synergistic approach combining domain and defect engineering was used in transparent 0.88 Pb(Mg1/3Nb2/3)O3-0.12PbTiO3-xSm(0.88PMN-0.12 PT-xSm) ceramics to improve ECE and temperature stability. Finally, a notable adiabatic temperature change (ΔT) of 2.07 K in the x = 0.01 ceramic, with ΔT exceeding 1.0 K across a broad temperature range from 30 to 180 °C was achieved. Piezoresponse force microscopy (PFM) and X-ray photoelectron spectroscopy revealed the presence of small domains and appropriate oxygen vacancies as contributors to the enhanced ECE and broad operation temperature range. This work introduces a promising candidate material for electrocaloric refrigeration.
更多
查看译文
关键词
Electrocaloric effect,PMN-PT,Synergistic strategy,Large adiabatic temperature,Broad working temperature range
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要