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Metallogrid Single-Molecule Magnet: Solvent-Induced Nuclearity Transformation and Magnetic Hysteresis at 16 K
被引:83
|作者:
Huang, Wei
[1
]
Shen, Fu-Xing
[1
]
Wu, Shu-Qi
[2
]
Liu, Li
[1
]
Wu, Dayu
[1
]
Zheng, Zhe
[1
]
Xu, Jun
[1
]
Zhang, Ming
[1
]
Huang, Xing-Cai
[1
]
Jiang, Jun
[1
]
Pan, Feifei
[1
]
Li, Yao
[1
]
Zhu, Kun
[1
]
Sato, Osamu
[2
]
机构:
[1] Changzhou Univ, Sch Petrochem Engn, Collaborat Innovat Ctr Adv Catalysis & Green Mfg, Jiangsu Key Lab Adv Catalyt Mat & Technol, Changzhou 213164, Jiangsu, Peoples R China
[2] Kyushu Univ, Inst Mat Chem & Engn, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
基金:
中国国家自然科学基金;
关键词:
LANTHANIDE CLUSTER;
SQUARE GRIDS;
DY-4;
ANALOG;
ION MAGNET;
RELAXATION;
BEHAVIOR;
COMPLEXES;
TETRANUCLEAR;
ANISOTROPY;
DYNAMICS;
D O I:
10.1021/acs.inorgchem.6b00500
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
Structural assembly and reversible transformation between a metallogrid Dy-4 SMM (2) and its fragment Dy-2 (1) were established in the different solvent media. The zero-field magnetization relaxation was slowed for dysprosium metallogrid (2) with relaxation barrier of U-eff = 61.3 K when compared to Dy-2 (1). Both magnetic dilution and application of a moderate magnetic field suppress ground-state quantum tunneling of magnetization and result in an enhanced U-eff of 119.9 and 96.7 K for 2, respectively. Interestingly, the lanthanide metallogrid complex (2) exhibits magnetic hysteresis loop even up to 16 K at a given field sweep rate of 500 Oe/s.
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页码:5476 / 5484
页数:9
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