Switching the anisotropy barrier of a single-ion magnet by symmetry change from quasi-D5h to quasi-Oh

被引：487

作者：

Liu, Jun-Liang ^{[1
]}

Chen, Yan-Cong ^{[1
]}

Zheng, Yan-Zhen ^{[2
]}

Lin, Wei-Quan ^{[1
]}

Ungur, Liviu ^{[3
]}

Wernsdorfer, Wolfgang ^{[4
,5
]}

Chibotaru, Liviu F. ^{[3
]}

Tong, Ming-Liang ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Key Lab Bioinorgan & Synthet Chem,Minist Educ, Guangzhou 510275, Guangdong, Peoples R China

[2] Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Appl Chem Res, Xian 710054, Peoples R China

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

[4] CNRS, Inst Neel, F-38042 Grenoble 9, France

[5] Univ Grenoble 1, F-38042 Grenoble 9, France

来源：

CHEMICAL SCIENCE | 2013年 / 4卷 / 08期

基金：

欧洲研究理事会;

关键词：

MOLECULE-MAGNET; LANTHANIDE COMPLEXES; RELAXATION; MAGNETIZATION; SHAPE; MAPS;

D O I：

10.1039/c3sc50843a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A reversible single-crystal-to-single-crystal transformation is used to dramatically change the relaxation behavior of a single-ion magnet. The coordination geometry of the Dy-III site of a [Zn-Dy-Zn] complex changes from pentagonal-bipyramid (quasi-D-5h) to octahedron (quasi-O-h), inducing an energy barrier change from 305 cm(-1) (439 K) to a negligible value, respectively. Ab initio calculations reveal that the ideal D-5h-Dy-III is of perfect axiality with a substantial energy barrier in accordance with the experimental result.

引用

页码：3310 / 3316

页数：7

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