Rare earth molecule-based magnetocaloric material, preparation method and application thereof
By constructing pentanuclear trapezoidal rare earth cluster materials using Schiff base ligands, the problems of fuzzy structure-property relationships and difficult magnetic coupling control in existing rare earth magnetocaloric materials have been solved, achieving high performance, wide temperature range, and stable magnetocaloric effect, which is suitable for cryogenic refrigeration and aerospace fields.
Patent Information
- Application Number
- CN202610391325.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing rare-earth magnetocaloric materials suffer from problems such as ambiguous structure-property relationships, difficulty in controlling magnetic coupling, narrow magnetocaloric effect temperature range, low magnetic entropy change, and poor cycle stability, which cannot meet the application requirements of high-performance, wide-temperature-range, and high-stability materials.
A pentanuclear trapezoidal rare earth cluster material was constructed using Schiff base ligands. By designing the reaction between Schiff base ligands and rare earth metals, a rare earth molecular-based magnetocaloric material with a trapezoidal metal framework was formed. The material was synthesized using a room-temperature stirring volatilization method, which simplifies the preparation process.
High magnetic entropy change and wide temperature range performance of rare earth molecular-based magnetocaloric materials have been achieved, improving the structural stability and refrigeration efficiency of the materials, making them suitable for cryogenic refrigeration, aerospace and biomedicine and other fields.
Smart Images
Figure CN122404378A_ABST