Slow Magnetic Order-Order Transition in the Spin Chain Antiferromagnet Ca3Co2O6

被引：87

作者：

Agrestini, S. ^{[1
,2
]}

Fleck, C. L. ^{[3
]}

Chapon, L. C. ^{[4
]}

Mazzoli, C. ^{[5
]}

Bombardi, A. ^{[6
]}

Lees, M. R. ^{[3
]}

Petrenko, O. A. ^{[3
]}

机构：

[1] Lab CRISMAT, CNRS, UMR 6508, F-14050 Caen, France

[2] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

[3] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[4] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[5] European Synchrotron Radiat Facil, F-38043 Grenoble 9, France

[6] Diamond Light Source Ltd, Rutherford Appleton Lab, Didcot OX11 0DE, Oxon, England

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 19期

基金：

英国工程与自然科学研究理事会;

关键词：

ONE-DIMENSIONAL CA3CO2O6; CRYSTAL NEUTRON-DIFFRACTION; SINGLE-CRYSTAL; COMPOUND CA3CO2O6;

D O I：

10.1103/PhysRevLett.106.197204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using powder neutron diffraction, we have discovered an unusual magnetic order-order transition in the Ising spin chain compound Ca3Co2O6. On lowering the temperature, an antiferromagnetic phase with a propagation vector k = (0.5, -0.5, 1) emerges from a higher temperature spin density wave structure with k = (0, 0, 1.01). This transition occurs over an unprecedented time scale of several hours and is never complete.

引用

页数：4

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