What is it about?

The phase transition of CrOCl toward a state of antiferromagnetic order below TN=13.5 K is accompanied by a lattice and structural distortion toward a twofold, 2b nuclear superstructure with a-axis unique monoclinic symmetry. The transition is associated with strong magnetoelastic coupling to a uniaxial antiferromagnet with ordered moments along c.

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Why is it important?

A second transition is discovered at Tc≈27.2 K being of purely magnetic origin and indicating the formation of an incommensurate magnetic superstructure.

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This page is a summary of: Observation of strong magnetoelastic coupling in a first-order phase transition of CrOCl, Physical Review B, October 2009, American Physical Society (APS), DOI: 10.1103/physrevb.80.144416.
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