The multiple core-shell structure in Cu(24)Ln(6) cluster with magnetocaloric effect and slow magnetization relaxation
Gang Xiong1, Hang Xu, Jian-Zhong Cui
1Department of Chemistry, Tianjin University, Tianjin, 300072, China. cuijianzhong@tju.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|February 28, 2014
Summary
Researchers discovered novel triple core-shell structures in Cu24Gd6 and Cu24Dy6 clusters. Cu24Gd6 exhibits a notable magnetic entropy change, indicating potential for magnetic cooling applications.
Area of Science:
- Materials Science
- Magnetism
- Nanotechnology
Background:
- Core-shell nanostructures are crucial for advanced material properties.
- Rare-earth metal clusters offer unique magnetic behaviors.
Purpose of the Study:
- To synthesize and characterize novel triple core-shell nanostructures.
- To investigate the magnetic properties of Cu24Gd6 and Cu24Dy6 clusters.
Main Methods:
- Structural characterization of the clusters.
- Magnetic property measurements, including magnetic entropy change and magnetization relaxation.
Main Results:
- First observation and structural characterization of triple core-shell structures in Cu24Gd6 and Cu24Dy6.
- Cu24Gd6 demonstrated a significant magnetic entropy change of 21.2 J kg(-1) K(-1) at 7 T.
- Cu24Dy6 displayed slow magnetization relaxation behavior.
Conclusions:
- The novel core-shell structures possess distinct magnetic properties.
- Cu24Gd6 shows promise for magnetic refrigeration applications.
- Cu24Dy6's relaxation behavior warrants further investigation for potential memory applications.
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