A neutron diffraction demonstration of long-range magnetic order in the quasicrystal approximant DyCd6
Source abstract
Abstract
We have used neutron powder diffraction to demonstrate the existence of long-range antiferromagnetic order of Ising-like Dy moments in the DyCd6 quasicrystal approximant phase. This cubic compound undergoes a slight distortion to a monoclinic cell at low temperatures. The Néel temperature is 18.0(2) K and the magnetic order of the Dy sublattice may be described in the parent cubic Im3¯ structure using a combination of two propagation vectors, k1 = [0 0 0] and k2 = [12 0 12], yielding ‘anti-I’ order. Alternatively, when referred to the monoclinic C2/c cell, the magnetic structure may be described by a single propagation vector: k = [1 0 0].
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Research context
OpenAlex topics: Quasicrystal Structures and Properties · X-ray Diffraction in Crystallography · Rare-earth and actinide compounds
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Affiliations
Physics Department and Centre for the Physics of Materials, McGill University 1 , 3600 University Street, Montreal, Quebec H3A 2T8, Canada
School of Physical, Environmental and Mathematical Sciences, UNSW Canberra at the Australian Defence Force Academy 2 , BC2610 ACT, Australia
Department of Physics and Astronomy, Iowa State University 3 , Ames, IA 50011, United States
Funding
Natural Sciences and Engineering Research Council of Canada · Ames Laboratory
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