Strong Axiality and Ising Exchange Interaction Suppress Zero-Field Tunneling of Magnetization of an Asymmetric Dy2 Single-Molecule Magnet

被引：738

作者：

Guo, Yun-Nan ^{[1
,2
]}

Xu, Gong-Feng ^{[1
]}

Wernsdorfer, Wolfgang ^{[3
,4
]}

Ungur, Liviu ^{[5
]}

Guo, Yang ^{[1
]}

Tang, Jinkui ^{[1
]}

Zhang, Hong-Jie ^{[1
]}

Chibotaru, Liviu F. ^{[5
]}

Powell, Annie K. ^{[6
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] CNRS, Inst Neel, F-38042 Grenoble, France

[4] Univ Grenoble 1, F-38042 Grenoble, France

[5] Katholieke Univ Leuven, Dept Chem, Div Quantum & Phys Chem, B-3001 Louvain, Belgium

[6] Karlsruhe Inst Technol, Inst Inorgan Chem, D-76131 Karlsruhe, Germany

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 31期

关键词：

RELAXATION; BEHAVIOR; COMPLEX; LIGAND; BIS(PHTHALOCYANINATO)TERBIUM; HO;

D O I：

10.1021/ja205035g

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

The high axiality and Ising exchange interaction efficiently suppress quantum tunneling of magnetization of an asymmetric dinuclear Dy-III complex, as revealed by combined experimental and theoretical investigations. Two distinct regimes of blockage of magnetization, one originating from the blockage at individual Dy sites and the other due to the exchange interaction between the sites, are separated for the first time. The latter contribution is found to be crucial, allowing an increase of the relaxation time by 3 orders of magnitude.

引用

收藏

页码：11948 / 11951

页数：4

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