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

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 نشر من قبل Martin Lees
 تاريخ النشر 2011
  مجال البحث فيزياء
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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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