Observation of an Extensive Curie Temperature Window and Synergic Multicaloric 
Effects in NiMnCuGaSn Alloys

Zhang, Xinyu; Qian, Hanyang; Cai, Rui; Wei, Zhiyang; He, Jing; Zhang, Mingxiao; Sun, Wen; Liu, Jian; Felser, Claudia; Li, Guowei

doi:10.1021/acsaelm.4c00495

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Observation of an Extensive Curie Temperature Window and Synergic Multicaloric Effects in NiMnCuGaSn Alloys

MPS-Authors

/persons/resource/persons126601

Felser, Claudia
Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Zhang, X., Qian, H., Cai, R., Wei, Z., He, J., Zhang, M., Sun, W., Liu, J., Felser, C., & Li, G. (2024). Observation of an Extensive Curie Temperature Window and Synergic Multicaloric Effects in NiMnCuGaSn Alloys. ACS Applied Electronic Materials, 1-9. doi:10.1021/acsaelm.4c00495.

引用: https://hdl.handle.net/21.11116/0000-000F-5A94-5

要旨

The study of multicaloric effects in Heusler alloys has attracted increasing research interest, fueled by their potential applications in solid-state refrigeration and energy conversion technologies. Despite the promising aspects, challenges such as the limited operating temperature range and large hysteresis have hindered the optimal device performance. Herein, by introducing a Cu/Sn co-substitution strategy, a Curie temperature window for synergic magnetostructural transformation is extended from 244 K to 313 K in the customized NiMnCuGaSn alloys, along with a substantial increase in transformation entropy change. Crucially, employing a combined approach of magnetic-field-stress loading and zero-field-stress unloading significantly reduces stress hysteresis and enhances the reversibility of the transformation, resulting in a significant adiabatic temperature change of 4.7 K at a relatively low critical stress. This approach underscores an efficient method to enhance caloric responses, paving the way for advances in cooling technologies. © 2024 American Chemical Society.