Quantum tunneling of magnetization via well-defined Dy-Cu exchange coupling in a ferrimagnetic high-spin [Dy4Cu] single-molecule magnet

被引：51

作者：

Ueki, Sohei

Ishida, Takayuki ^{[1
]}

Nogami, Takashi

Choi, Kwang-Yong

Nojiri, Hiroyuki

机构：

[1] Univ Electrocommun, Dept Appl Phys & Chem, Tokyo 1828585, Japan

[2] Univ Electrocommun, Course Coherent Opt Sci, Tokyo 1828585, Japan

[3] Japan Sci & Technol Agcy, CREST, Sendai, Miyagi 9808577, Japan

[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 980, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 440卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2007.04.063

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A centrosymmetric rectangular complex [DY4Cu] was prepared from dysprosium(III) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate and copper(II) dimethylglyoximate. From magnetic studies, the Dy magnetic moments are all aligned parallel at the ground state via anti-ferromagnetic superexchange interaction with the central Cu spin. In pulsed-field magnetization measurements at 0.5 K, complex [DY4Cu] exhibited magnetization steps with hysteresis, which is typical of a single-molecule magnet. This behavior is explained in terms of a simple Ising model together with well-defined Dy-Cu exchange coupling (-0.64 K). (C) 2007 Elsevier B.V. All rights reserved.

引用

收藏

页码：263 / 267

页数：5

相关论文

共 25 条

[1] A nonanuclear dysprosium (III)-copper(II) complex exhibiting single-molecule magnet behavior with very slow zero-field relaxation [J].

Aronica, Christophe ;

Pilet, Guillaume ;

Chastanet, Guillaume ;

Wernsdorfer, Wolfgang ;

Jacquot, Jean-Francois ;

Luneau, Dominique .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (28) :4659-4662

[2] A family of rare-earth-based single chain magnets: Playing with anisotropy [J].

Bernot, Kevin ;

Bogani, Lapo ;

Caneschi, Andrea ;

Gatteschi, Dante ;

Sessoli, Roberta .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (24) :7947-7956

[3] Single-molecule magnets [J].

Christou, George ;

Gatteschi, Dante ;

Hendrickson, David N. ;

Sessoli, Roberta .

MRS Bulletin, 2000, 25 (11) :66-71

[4] Evidence for single-chain magnet behavior in a MnIII-NiII chain designed with high spin magnetic units:: A route to high temperature metastable magnets [J].

Clérac, R ;

Miyasaka, H ;

Yamashita, M ;

Coulon, C .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (43) :12837-12844

[5] Dispersion and absorption in dielectrics I. Alternating current characteristics [J].

Cole, KS ;

Cole, RH .

JOURNAL OF CHEMICAL PHYSICS, 1941, 9 (04) :341-351

[6] Is ferromagnetism an intrinsic property of the CuII/GdIII couple?: 1.: Structures and magnetic properties of two novel dinuclear complexes with a μ-phenolato-μ-oximato (Cu,Gd) core [J].

Costes, JP ;

Dahan, F ;

Dupuis, A ;

Laurent, JP .

INORGANIC CHEMISTRY, 2000, 39 (02) :169-173

[7] Heterodinuclear Cu-Tb single-molecule magnet [J].

Costes, JP ;

Dahan, F ;

Wernsdorfer, W .

INORGANIC CHEMISTRY, 2006, 45 (01) :5-7

[8] Is ferromagnetism an intrinsic property of the CuII/GdIII couple?: 2.: Structures and magnetic properties of novel trinuclear complexes with μ-phenolato-μ-oximato (Cu-Ln-Cu) cores (Ln = La, Ce, Gd) [J].

Costes, JP ;

Dahan, F ;

Dupuis, A .

INORGANIC CHEMISTRY, 2000, 39 (26) :5994-6000

[9]

Gatteschi D, 2006, MESOSCOPIC PHYS NANO, P1

[10] Synthesis, structures, and magnetic properties of heteronuclear Cu(II)-Ln(III) (Ln = La, Gd, or Tb) complexes [J].

He, F ;

Tong, ML ;

Chen, XM .

INORGANIC CHEMISTRY, 2005, 44 (23) :8285-8292