High-field ESR in a two-dimensional S=1 spin system Ni5(TeO3)4Br2

被引：12

作者：

Arcon, Denis

Zorko, Andrej

Pregelj, Matej

Dolinsek, Janez

Berger, Helmuth

Ozarowski, Andrew

van Tool, Hans

Brunel, Louis Claude

机构：

[1] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia

[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia

[3] Ecole Polytech Fed Lausanne, Inst Phys Complex Matter, CH-1015 Lausanne, Switzerland

[4] Natl High Magnet Field Lab, Tallahassee, FL USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 316卷 / 02期

关键词：

antiferromagnet; geometrical frustration; antiferromagnetic;

D O I：

10.1016/j.jmmm.2007.02.143

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single crystals of a transition-metal tellurium oxy-bromide Ni-5(TeO3)(4)Br-2 with a layered arrangement of Ni (2+) (S = 1) ions have been investigated with a high-frequency electron spin resonance (ESR). Strongly temperature-dependent resonance signal has been found only at temperatures lower than T-c2 = 15 K. The measured signal exhibits a dramatic narrowing and a complex temperature dependence of the resonance center on cooling. The magnetic resonance results also indicate a zero-field gap omega(g) = 450 GHz. The results are discussed in connection with the structural and magnetic susceptibility data. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：E349 / E351

页数：3

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