Synthesis and characterization of single crystals of the spin-1/2 kagome-lattice antiferromagnets ZnxCu4-x(OH)6Cl2

被引：78

作者：

Han, T. H. ^{[1
]}

Helton, J. S. ^{[1
,2
]}

Chu, S. ^{[3
]}

Prodi, A. ^{[1
]}

Singh, D. K. ^{[2
,4
]}

Mazzoli, C. ^{[5
]}

Mueller, P. ^{[6
]}

Nocera, D. G. ^{[6
]}

Lee, Y. S. ^{[1
]}

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

[2] NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA

[3] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA

[4] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[5] European Synchrotron Radiat Facil, FR-38043 Grenoble, France

[6] MIT, Dept Chem, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 10期

基金：

美国国家科学基金会;

关键词：

TRIANGULAR-LATTICE; HERBERTSMITHITE; STATES;

D O I：

10.1103/PhysRevB.83.100402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Zn-paratacamite family, ZnxCu4-x(OH)(6)Cl-2 for x >= 0.33, is an ideal system for studying spin-1/2 frustrated magnetism in the form of antiferromagnetic Cu2+ kagome planes. Here we report a new synthesis method by which high-quality millimeter-sized single crystals of Zn-paratacamite have been produced. These crystals have been characterized by metal analysis, x-ray diffraction, neutron diffraction, and thermodynamic measurements. The x = 1 member of the series displays a magnetic susceptibility that is slightly anisotropic at high temperatures with chi(c) > chi ab. Neutron and synchrotron x-ray diffraction experiments confirm the quality of these x = 1 single crystals and indicate no obvious structural transition down to temperatures of T 2 K.

引用

页数：4

共 32 条

[1] RESONATING VALENCE BONDS - NEW KIND OF INSULATOR [J].