Toward Perfection: Kapellasite, Cu3Zn(OH)6Cl2, a New Model S=1/2 Kagome Antiferromagnet

被引：74

作者：

Colman, R. H. ^{[1
]}

Ritter, C. ^{[3
]}

Wills, A. S. ^{[1
,2
]}

机构：

[1] UCL, Dept Chem, Christopher Ingold Labs, London WC1H 0AJ, England

[2] London Ctr Nanotechnol, London WC1H 0AH, England

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

来源：

CHEMISTRY OF MATERIALS | 2008年 / 20卷 / 22期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1021/cm802060n

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 study was conducted to demonstrate the synthesis and preliminary magnetic characterization of Kapellasite mineral, which is a metastable polymorph of Herbertsmithite that shares its chemical formula, Cu3Zn(OH) 6Cl2. Kapellasite mineral was synthesized, using a modified method to that used by Feitknecht from ZnCl2 solution and copper metal. The perturbative effect in Kapellasite was expected to be smaller, due to the quasi-2D nature of its structure, while Cu/Zn disorder in Herbertsmithite introduced local exchange between the kagome planes. Powder neutron diffraction (PND), taken with the D1a digffractometer at the ILL from a 0.3 g sample of protonated Kapellasite showed that a single copper hydroxychloride phase was formed under the prevailing synthetic conditions.

引用

页码：6897 / 6899

页数：3

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