Giant reversible barocaloric effect with low hysteresis in antiperovskite PdNMn3 compound
Giant reversible barocaloric effect with low hysteresis in antiperovskite PdNMn3 compound
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反钙钛矿 PdNMn3 化合物具有低滞后的巨大可逆压热效应
DOI：
10.1016/j.scriptamat.2021.114049
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发表时间：
2021-10
影响因子：
6
通讯作者：
Yuping Sun
中科院分区：
文献类型：
--
作者：
Kun Tao;Wenhai Song;Jianchao Lin;Xuekai Zhang;Peng Tong;Zhao Zhang;Ji Qi;Bing Li;Langsheng Ling;Long Ma;Yuping Sun
压热（BC）制冷是一种新型清洁节能制冷技术。然而，巨大的BC效应主要基于一级相变，导致不利的滞后现象。在这里，我们报告了反钙钛矿 PdNMn3 化合物中反铁磁 (AFM) 到顺磁 (PM) 相变 (TN= 283 K) 的巨大 BC 效应和弱磁滞。在290 MPa下可逆等温熵变达到28.3 J kg−1K−1。滞后仅约 2 K，这与较小的体积变化 ΔV/VatTN（~0.2%）相关。磁熵被认为主要贡献于TN处的熵变，这补偿了由于较小的ΔV/V而减少的晶格贡献。我们的结果证明了在晶体和非晶体熵变在一阶相变（FOPT）中协同作用的材料中实现巨大BC效应和弱磁滞的可能性。
Barocaloric (BC) refrigeration is a new type of clean and energy-efficiency refrigeration technology. However, the giant and colossal BC effects are mainly based on the first-order phase transitions, leading to the unfavorable hysteresis. Here we report the giant BC effect along with weak hysteresis at the antiferromagnetic (AFM) to paramagnetic (PM) phase transition (TN= 283 K) in antiperovskite PdNMn3compound. The reversible isothermal entropy change reaches 28.3 J kg−1K−1under 290 MPa. The hysteresis is only about 2 K, which is associated with a small volumetric change ΔV/VatTN(~0.2%). The magnetic entropy is proposed to mainly contribute to the entropy change atTN, which compensates for the reduced lattice contribution due to the small ΔV/V. Our result demonstrates the possibility of realizing giant BC effect together with weak hysteresis in materials where both crystallographic and non-crystallographic entropy changes cooperate at the first-order phase transition (FOPT).
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影响因子：
1.7
作者：
K. Takenaka;Takuto Sugiura;Y. Kadowaki;M. Ozeki;Y. Okamoto;A. Fujita
通讯作者：
K. Takenaka;Takuto Sugiura;Y. Kadowaki;M. Ozeki;Y. Okamoto;A. Fujita
影响因子：
3.7
作者：
J. Zemen;J. Zemen;E. Mendive-Tapia;Z. Gercsi;Z. Gercsi;Rudra Banerjee;J. Staunton;K. G. Sandeman-K.-G.-S
通讯作者：
J. Zemen;J. Zemen;E. Mendive-Tapia;Z. Gercsi;Z. Gercsi;Rudra Banerjee;J. Staunton;K. G. Sandeman-K.-G.-S
影响因子：
16.6
作者：
Lloveras, P.;Aznar, A.;Tamarit, J. -Ll.
通讯作者：
Tamarit, J. -Ll.
影响因子：
5.5
作者：
Takenaka K;Ichigo M;Hamada T;Ozawa A;Shibayama T;Inagaki T;Asano K
通讯作者：
Asano K
影响因子：
41.2
作者：
Manosa, Lluis;Gonzalez-Alonso, David;Acet, Mehmet
通讯作者：
Acet, Mehmet