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arXiv · 1104.3880

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

S. Agrestini·C. L. Fleck·L. C. Chapon·C. Mazzoli·A. Bombardi·M. R. Lees·O. A. Petrenko
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Abstract

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 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.

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S. Agrestini, C. L. Fleck, L. C. Chapon, C. Mazzoli, A. Bombardi, M. R. Lees, O. A. Petrenko. 2011-05-16. Slow Magnetic Order-Order Transition in the Spin Chain Antiferromagnet Ca3Co2O6. https://doi.org/10.1103/physrevlett.106.197204

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