The Use of Magnetic Dilution To Elucidate the Slow Magnetic Relaxation Effects of a Dy2 Single-Molecule Magnet

被引：347

作者：

Habib, Fatemah ^{[1
]}

Lin, Po-Heng ^{[1
]}

Long, Jerome ^{[1
]}

Korobkov, Ilia ^{[1
]}

Wernsdorfer, Wolfgang ^{[2
,3
]}

Murugesu, Muralee ^{[1
,4
]}

机构：

[1] Univ Ottawa, Dept Chem, 10 Marie Curie, Ottawa, ON K1N 6N5, Canada

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

[3] Univ J Fourier, F-38042 Grenoble, France

[4] Ctr Catalysis Res & Innovat, Ottawa, ON K1N 6N5, Canada

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 23期

基金：

加拿大自然科学与工程研究理事会;

关键词：

COMPLEXES; TRANSITION; BARRIER; DIMER; SPIN; GD;

D O I：

10.1021/ja2017009

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The magnetic dilution method was employed in order to elucidate the origin of the slow relaxation of the magnetization in a Dy-2 single-molecule magnet (SMM). The doping effect was studied using SQUID and micro-SQUID measurements on a Dy-2 SMM diluted in a diamagnetic Y-2 matrix. The quantum tunneling of the magnetization that can occur was suppressed by applying optimum dc fields. The dominant single-ion relaxation was found to be entangled with the neighboring Dy-III ion relaxation within the molecule, greatly influencing the quantum tunneling of the magnetization in this complex.

引用

页码：8830 / 8833

页数：4

共 32 条

[1] Magnetic ordering in a high-spin Fe19 molecular nanomagnet -: art. no. 064408 [J].

Affronte, M ;

Lasjaunias, JC ;

Wernsdorfer, W ;

Sessoli, R ;

Gatteschi, D ;

Heath, SL ;

Fort, A ;

Rettori, A .

PHYSICAL REVIEW B, 2002, 66 (06) :644081-644087

[2] Exchange-biased dimers of single-molecule magnets in OFF and ON states [J].

Bagai, Rashmi ;

Wernsdorfer, Wolfgang ;

Abboud, Khalil A. ;

Christou, George .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (43) :12918-+

[3] Site-Selective Lanthanide Doping in a Nonanuclear Yttrium(III) Cluster Revealed by Crystal Structures and Luminescence Spectra [J].

Baril-Robert, Francois ;

Petit, Sarah ;

Pilet, Guillaume ;

Chastanet, Guillaume ;

Reber, Christian ;

Luneau, Dominique .

INORGANIC CHEMISTRY, 2010, 49 (23) :10970-10976

[4] Light-Induced Spontaneous Magnetization in Doped Colloidal Quantum Dots [J].

Beaulac, Remi ;

Schneider, Lars ;

Archer, Paul I. ;

Bacher, Gerd ;

Gamelin, Daniel R. .

SCIENCE, 2009, 325 (5943) :973-976

[5] Ferromagnetic and antiferromagnetic intermolecular interactions in a new family of Mn4 complexes with an energy barrier to magnetization reversal [J].

Boskovic, C ;

Bircher, R ;

Tregenna-Piggott, PLW ;

Güdel, HU ;

Paulsen, C ;

Wernsdorfer, W ;

Barra, AL ;

Khatsko, E ;

Neels, A ;

Stoeckli-Evans, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (46) :14046-14058

[6] Homo- (4f, 4f) and heterodimetallic (4f, 4f′) complexes.: The first structurally characterized example of a heterodimetallic (Yb, La) complex (1′).: Magnetic properties of 1′ and of a homodinuclear (Gd, Gd) analogue [J].

Costes, JP ;

Dahan, F ;

Dupuis, A ;

Lagrave, S ;

Laurent, JP .

INORGANIC CHEMISTRY, 1998, 37 (01) :153-155

[7]

Costes JP, 2002, CHEM-EUR J, V8, P3442, DOI 10.1002/1521-3765(20020802)8:15<3442::AID-CHEM3442>3.0.CO

[8]

2-Z

[9] A New Family of 1D Exchange Biased Heterometal Single-Molecule Magnets: Observation of Pronounced Quantum Tunneling Steps in the Hysteresis Loops of Quasi-Linear {Mn2Ni3} Clusters [J].

Das, Animesh ;

Gieb, Klaus ;

Krupskaya, Yulia ;

Demeshko, Serhiy ;

Dechert, Sebastian ;

Klingeler, Ruediger ;

Kataev, Vladislav ;

Buechner, Bernd ;

Mueller, Paul ;

Meyer, Franc .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (10) :3433-3443

[10] Spintronics: A challenge for materials science and solid-state chemistry [J].

Felser, Claudia ;

Fecher, Gerhard H. ;

Balke, Benjamin .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (05) :668-699

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