Abstract
A new structural phase of the quasi-one-dimensional antiferromagnet CrCl 2 could be prepared by Bridgman technique. The new phase differs from the known crystal structure by doubling of the lattice constant along the b axis, and is isostructural to HgCl 2. The structural refinement of neutron diffraction data reveals strong substitutional disorder, which can be regarded as stacking disorder of Cl layers. The disorder gives rise to a coexistence of two structural phases in the investigated samples. The magnetic moments of each phase order at different temperatures T N1 = 16.0 K and t N2 = 11.3 K, respectively. Powdering of the crystals destroys the new phase, and the powder diffractogram displays only the pattern of the known CrCl 2 structure. Above the Néel temperature, incommensurate short-range order occurs due to magnetic frustration effects between spins of adjacent chains. The ratio between interchain and intrachain coupling could be estimated from the incommensurate position of the diffuse scattering to be J′ 1 J ≈ 0.13 .
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
