A colossal barocaloric effect induced by the creation of a high-pressure phase

As a promising environment-friendly alternative to current vapor-compression refrigeration, solid-state refrigeration based on the barocaloric effect has been attracting worldwide attention. Generally, both phases in which a barocaloric effect occurs are present at ambient pressure. Here, instead, w...

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Bibliographic Details
Published in:Materials horizons 2023-03, Vol.1 (3), p.977-982
Main Authors: Zhang, Zhao, Jiang, Xiaoming, Hattori, Takanori, Xu, Xiong, Li, Min, Yu, Chenyang, Zhang, Zhe, Yu, Dehong, Mole, Richard, Yano, Shin-ichiro, Chen, Jie, He, Lunhua, Wang, Chin-Wei, Wang, Hui, Li, Bing, Zhang, Zhidong
Format: Article
Language:English
Subjects:
High pressure
Neutron diffraction
Phase diagrams
Pressure dependence
Raman spectra
Refrigeration
Vapor compression refrigeration
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Summary:As a promising environment-friendly alternative to current vapor-compression refrigeration, solid-state refrigeration based on the barocaloric effect has been attracting worldwide attention. Generally, both phases in which a barocaloric effect occurs are present at ambient pressure. Here, instead, we demonstrate that KPF 6 exhibits a colossal barocaloric effect due to the creation of a high-pressure rhombohedral phase. The phase diagram is constructed based on pressure-dependent calorimetric, Raman scattering, and neutron diffraction measurements. The present study is expected to provide an alternative routine to colossal barocaloric effects through the creation of a high-pressure phase. The creation of a high-pressure rhombohedral phase leads to a colossal barocaloric effect in KPF 6 .
ISSN:2051-6347
2051-6355
DOI:10.1039/d2mh00905f