Intramolecular antiferromagnetic coupling in supramolecular grid structures with Co2+ metal centers

被引：116

作者：

Waldmann, O ^{[1
]}

Hassmann, J ^{[1
]}

Muller, P ^{[1
]}

Hanan, GS ^{[1
]}

Volkmer, D ^{[1
]}

Schubert, US ^{[1
]}

Lehn, JM ^{[1
]}

机构：

[1] UNIV STRASBOURG 1,LAB CHIM SUPRAMOL,F-67000 STRASBOURG,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.78.3390

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetization of novel supramolecular grid structures consisting of four bis(bipyridyl)-pyrimidine ligands and four Co2+ ions was measured, We provide evidence for an antiferromagnetic coupling of the Co2+ spins, Investigations of microcrystals, powders, and solutions with the mean distance of the grids varying from 20 to 160 Angstrom showed that the coupling is solely of intramolecular origin and is not affected by long-range ordering. Thus, these grids form an almost ideal quantum spill system of four spins. This; is further supposed by low-temperature field-sweep measurements.

引用

页码：3390 / 3393

页数：4

共 14 条

[1]

Abragam A., 1970, ELECT PARAMAGNETIC R

[2] OBSERVATION OF A SPIN GAP IN SRCU2O3 COMPRISING SPIN-1/2 QUASI-1D 2-LEG LADDERS [J].

AZUMA, M ;

HIROI, Z ;

TAKANO, M ;

ISHIDA, K ;

KITAOKA, Y .

PHYSICAL REVIEW LETTERS, 1994, 73 (25) :3463-3466

[3] CORRELATED ELECTRONS IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

DAGOTTO, E .

REVIEWS OF MODERN PHYSICS, 1994, 66 (03) :763-840

[4] A CONCEPT FOR THE SYNTHESIS OF 3-DIMENSIONAL HOMOMETALLIC AND BIMETALLIC OXALATE-BRIDGED NETWORKS [M(2)(OX)(3)](N) - STRUCTURAL, MOSSBAUER, AND MAGNETIC STUDIES IN THE FIELD OF MOLECULAR-BASED MAGNETS [J].

DECURTINS, S ;

SCHMALLE, HW ;

SCHNEUWLY, P ;

ENSLING, J ;

GUTLICH, P .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (21) :9521-9528

[5] CONTINUUM DYNAMICS OF THE 1-D HEISENBERG ANTI-FERROMAGNET - IDENTIFICATION WITH THE O(3) NON-LINEAR SIGMA-MODEL [J].

HALDANE, FDM .

PHYSICS LETTERS A, 1983, 93 (09) :464-468

[6] NON-LINEAR FIELD-THEORY OF LARGE-SPIN HEISENBERG ANTI-FERROMAGNETS - SEMI-CLASSICALLY QUANTIZED SOLITONS OF THE ONE-DIMENSIONAL EASY-AXIS NEEL STATE [J].

HALDANE, FDM .

PHYSICAL REVIEW LETTERS, 1983, 50 (15) :1153-1156

[7]

HANAN GS, IN PRESS

[8]

HANAN GS, 1995, ANGEW CHEM INT EDIT, V10, P34

[9]

HANAN GS, 1995, THESIS U L PASTEUR S

[10] OBSERVATION OF THE SPIN-PEIERLS TRANSITION IN LINEAR CU2+ (SPIN-1/2) CHAINS IN AN INORGANIC COMPOUND CUGEO3 [J].

HASE, M ;

TERASAKI, I ;

UCHINOKURA, K .

PHYSICAL REVIEW LETTERS, 1993, 70 (23) :3651-3654

← 1 2 →