期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 134, 期 7, 页码 3314-3317出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja209752z
关键词
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资金
- NNSFC [20901064, 20825103, 21021061, 90922031]
- Ministry of Science and Technology of China [2012CB821704]
- Fundamental Research Funds for the Central Universities [2010121016]
Four 52-metal-ion 3d-4f cluster complexes featuring a common core of Ln(42)M(10) (Ln = Gd3+, Dy3+; M = Co2+/3+, Ni2+) were obtained through self-assembly of the metal ions templated by mixed anions (ClO4- and CO32-). Magnetic studies revealed that the Gd42Co10 and Gd42Ni10 clusters exhibit the largest magnetocaloric effect (MCE) among any known 3d-4f complexes. Replacement of Gd3+ ions with anisotropic Dy3+ ions caused significant changes in the magnetic behavior of the clusters; both DY42Co10 and Dy42Ni10 displayed slow relaxation of the magnetization.
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