Enhancing the Quantum Properties of Manganese-Lanthanide Single- Molecule Magnets: Observation of Quantum Tunneling Steps in the Hysteresis Loops of a {Mn12Gd} Cluster

被引：228

作者：

Stamatatos, Theocharis C. ^{[1
]}

Teat, Sinion J. ^{[2
]}

Wernsdorfer, Wolfgang ^{[3
,4
]}

Christou, George ^{[1
]}

机构：

[1] Univ Florida, Dept Chem, Gainesville, FL 32611 USA

[2] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[3] CNRS, Inst Lab Louis Neel, Grenoble 9, France

[4] Univ Grenoble 1, Grenoble 9, France

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 03期

基金：

美国国家科学基金会;

关键词：

cluster compounds; lanthanides; magnetic properties; manganese; single-molecule magnets; HIGH-SPIN MOLECULES; PHASE INTERFERENCE; MAGNETIZATION; RELAXATION; CRYSTAL; FAMILY;

D O I：

10.1002/anie.200804286

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Graph Presented) Quantum tunneling of magnetization (QTM) steps have been observed for a mixed 3d-4f single-molecule magnet for the first time in the hysteresis loops of {Mn12Gd}. This phenomenon is assigned to larger than usual exchange coupling of the 4f atom with the {Mn12} shell. This improved quantum behavior for the important class of SMMs opens up the prospects for its detailed study using hysteresis methods. Gd purple, Mn(II) yellow, Mn(III) blue, O red, N green. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：521 / 524

页数：4

共 39 条

[1] Bridging nitrate groups in [Mn4O3(NO3)(O2CMe)3(R2dbm)3] (R = H, Et) and [Mn4O2(NO3)(O2CEt)6(bpy)2](ClO4):: Acidolysis routes to tetranuclear manganese carboxylate complexes [J].

Aromi, G ;

Bhaduri, S ;

Artús, P ;

Folting, K ;

Christou, G .

INORGANIC CHEMISTRY, 2002, 41 (04) :805-817

[2] Resonant magnetization tunneling in the trigonal pyramidal Mn(IV)Mn-3(III) complex [Mn4O3Cl(O2CCH3)3(dbm)3] [J].

Aubin, SMJ ;

Dilley, NR ;

Pardi, L ;

Krzystek, J ;

Wemple, MW ;

Brunel, LC ;

Maple, MB ;

Christou, G ;

Hendrickson, DN .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (20) :4991-5004

[3] Reduced anionic Mn12 molecules with half-integer ground states as single-molecule magnets [J].

Aubin, SMJ ;

Sun, ZM ;

Pardi, L ;

Krzystek, J ;

Folting, K ;

Brunel, LC ;

Rheingold, AL ;

Christou, G ;

Hendrickson, DN .

INORGANIC CHEMISTRY, 1999, 38 (23) :5329-5340

[4] MESOSCOPIC QUANTUM TUNNELING OF THE MAGNETIZATION [J].

BARBARA, B ;

WERNSDORFER, W ;

SAMPAIO, LC ;

PARK, JG ;

PAULSEN, C ;

NOVAK, MA ;

FERRE, R ;

MAILLY, D ;

SESSOLI, R ;

CANESCHI, A ;

HASSELBACH, K ;

BENOIT, A ;

THOMAS, L .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 140 :1825-1828

[5] Molecular spintronics using single-molecule magnets [J].

Bogani, Lapo ;

Wernsdorfer, Wolfgang .

NATURE MATERIALS, 2008, 7 (03) :179-186

[6] Synthesis and characterization of a Mn22 single-molecule magnet and a [Mn22]n single-chain magnet [J].

Brockman, Jonathan T. ;

Stamatatos, Theocharis C. ;

Wernsdorfer, Wolfgang ;

Abboud, Khalil A. ;

Christou, George .

INORGANIC CHEMISTRY, 2007, 46 (22) :9160-9171

[7] BOND-VALENCE PARAMETERS OBTAINED FROM A SYSTEMATIC ANALYSIS OF THE INORGANIC CRYSTAL-STRUCTURE DATABASE [J].

BROWN, ID ;

ALTERMATT, D .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1985, 41 (AUG) :244-247

[8] Mixed-valence MnIIIMnIV clusters [Mn7O8(O2SePh)8(O2CMe)(H2O)] and [Mn7O8(O2SePh)9(H2O)]:: Single-chain magnets exhibiting quantum tunneling of magnetization [J].

Chakov, NE ;

Wernsdorfer, W ;

Abboud, KA ;

Christou, G .

INORGANIC CHEMISTRY, 2004, 43 (19) :5919-5930

[9] Single-molecule magnets:: Structural characterization, magnetic properties, and 19F NMR spectroscopy of a Mn12 family spanning three oxidation levels [J].

Chakov, NE ;

Soler, M ;

Wernsdorfer, W ;

Abboud, KA ;

Christou, G .

INORGANIC CHEMISTRY, 2005, 44 (15) :5304-5321

[10] The properties of the [Mn12O12(O2CR)16(H2O)4] single-molecule magnets in truly axial symmetry:: [Mn12O12(O2CCH2Br)16(H2O)4]•4CH2Cl2 [J].

Chakov, Nicole E. ;

Lee, Sheng-Chiang ;

Harter, Andrew G. ;

Kuhns, Philip L. ;

Reyes, Arneil P. ;

Hill, Stephen O. ;

Dalal, N. S. ;

Wernsdorfer, Wolfgang ;

Abboud, Khalil A. ;

Christou, George .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (21) :6975-6989

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