The zero-field magnetic ground state of EuC6 investigated by muon spectroscopy

被引：8

作者：

Lamura, G. ^{[2
,3
]}

Shiroka, T. ^{[4
,5
]}

Cahen, S. ^{[1
]}

Rida, H. ^{[1
]}

Emery, N. ^{[6
]}

Mareche, J-F ^{[1
]}

Lagrange, P. ^{[1
]}

Herold, C. ^{[1
]}

机构：

[1] Univ Lorraine, Inst Jean Lamour, UMR CNRS 7198, F-54506 Vandoeuvre Les Nancy, France

[2] CNR SPIN, I-16146 Genoa, Italy

[3] Univ Genoa, I-16146 Genoa, Italy

[4] ETH Honggerberg, Festkorperphys Lab, CH-8093 Zurich, Switzerland

[5] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[6] UPEC, CNRS, ICMPE GESMAT, UMR 7182, F-94320 Thiais, France

来源：

CARBON | 2012年 / 50卷 / 11期

关键词：

D O I：

10.1016/j.carbon.2012.04.028

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：

The magnetic ground state of EuC6, a first-stage graphite intercalation compound, was investigated by means of zero-field muon spectroscopy. Below the Neel antiferromagnetic temperature (42 K), the highly damped oscillations in the muon asymmetry could be modelled with a Bessel line shape, indicative of an incommensurate magnetic order. The internal magnetic field, as probed by the implanted muons, lies in the plane of the europium ions, has an average intensity of 150(22) mT, and seems to arise from a strong contact hyperfine interaction. The latter partially cancels out the dipolar contribution to the local field, in turn due to the localized Eu spins arranged in an antiferromagnetic triangular lattice (frustrated spin lattice) with negligible inter-layer couplings. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：3995 / 4001

页数：7

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