How Far can the Anisotropy Deviate from Uniaxiality in a Dy-Based Single-Molecule Magnet? Dinuclear Dy(III) Complex Study

被引：8

作者：

Baniodeh, Amer ^{[1
,2
]}

Mondal, Abhishake ^{[2
]}

Galeev, Ravil ^{[3
]}

Sukhanov, Andrei ^{[3
]}

Eremina, Rushana ^{[3
]}

Voronkova, Violeta ^{[3
]}

Anson, Christopher E. ^{[2
]}

Powell, Annie K. ^{[1
,2
]}

机构：

[1] KIT, Inst Nanotechnol INT, POB 76021, Karlsruhe, Germany

[2] KIT, Inst Inorgan Chem, Engesserstr 15, D-76131 Karlsruhe, Germany

[3] Russian Acad Sci, Zavoisky Phys Tech Inst, Sibirsky Tr 10-7, Kazan 420029, Russia

来源：

APPLIED MAGNETIC RESONANCE | 2017年 / 48卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

LANTHANIDE COMPLEXES; EXCHANGE INTERACTION; DYSPROSIUM(III); BEHAVIOR;

D O I：

10.1007/s00723-016-0852-y

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The Dy-III ions in the dimer [Dy-2( H(2)tea)(2)(O2CPh)(4)].2H(2)O (1) (H(3)tea = tri-ethanolamine) have the 9-coordinate monocapped square-antiprismatic ligand field environment. Compound 1 shows slow relaxation of magnetization which is observable only with applied magnetic fields. This is consistent with the idea that low-symmetry ligand fields allow for the quantum tunneling of magnetization. This is reflected by the fact that there are no observable maxima in the out-of-phase ac susceptibility above 1.8 K. The {g}-tensor of the Dy-III ions {g(x) = 11, g(y) = 8.2, g(z) = 1} further underlying the reduced uniaxiality in this system was determined in electron paramagnetic resonance (X- and Q-band) studies of 1 at temperatures down to 4 K.

引用

页码：101 / 113

页数：13

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