A {Cr2IIIDy2III} Single-Molecule Magnet: Enhancing the Blocking Temperature through 3d Magnetic Exchange

被引：344
作者：
Langley, Stuart K. [1 ]
Wielechowski, Daniel P. [1 ]
Vieru, Veacheslav [2 ,3 ]
Chilton, Nicholas F. [4 ]
Moubaraki, Boujemaa [1 ]
Abrahams, Brendan F. [5 ]
Chibotaru, Liviu F. [2 ,3 ]
Murray, Keith S. [1 ]
机构：
[1] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia
[2] Katholieke Univ Leuven, Theory Nanomat Grp, B-3001 Heverlee, Belgium
[3] Katholieke Univ Leuven, INPAC Inst Nanoscale Phys & Chem, B-3001 Heverlee, Belgium
[4] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England
[5] Univ Melbourne, Sch Chem, Melbourne, Vic 3010, Australia
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2013年 / 52卷 / 46期
基金：
澳大利亚研究理事会;
关键词：
abinitio calculations; chromium; dysprosium; exchange; heterometallic cluster compounds; ANISOTROPIC BARRIER; COMPLEXES; ION; MECHANISMS; SYMMETRY; BEHAVIOR; CLUSTER;
D O I：
10.1002/anie.201306329
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Butterfly magnet: The replacement of diamagnetic CoIII for CrIII in a 3d-4f butterfly complex results in vastly improved single-molecule magnet properties. Longer relaxation times are found, with magnetic hysteresis observed. This is due to exchange interactions between the DyIII and CrIII ions, resulting in a multilevel exchange barrier with significantly reduced quantum tunneling of the magnetization. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：12014 / 12019
页数：6
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