Atomic structure of the i- R -Cd quasicrystals and consequences for magnetism

Content Provider	Semantic Scholar
Author	Yamada, Tsunetomo Takakura, Hiroyuki Kong, Tai Jayasekara, W. T. Kreyssig, Andreas Beutier, Guillaume Canfield, Paul C. Boissieu, M. H. De Goldman, A. I.
Copyright Year	2016
Abstract	We report on the six-dimensional (6D) structural refinement of three members of the i-$R$-Cd quasicrystals ($R$ = Gd, Dy, Tm) via synchrotron x-ray diffraction from single-grain samples, and show that this series is isostructural to the i-${\mathrm{YbCd}}_{5.7}$ quasicrystal. However, our refinements suggest that the $R$ occupancy on the Yb icosahedron sites within the Tsai-type atomic cluster is approximately 80%, with the balance taken up by Cd. Similarities between the i-$R$-Cd series and i-${\mathrm{ScZn}}_{7.33}$, and their differences with i-${\mathrm{YbCd}}_{5.7}$ and i-${\mathrm{Ca}}_{15}{\mathrm{Cd}}_{85}$, indicate that there are at least two subclasses of Tsai-type icosahedral quasicrystals. We further show from x-ray resonant magnetic scattering (XRMS) measurements on a set of closely related ${\mathrm{Tb}}_{1\ensuremath{-}x}{\mathrm{Y}}_{x}{\mathrm{Cd}}_{6}$ 1/1 approximants that the dilution of the magnetic $R$ ions on the icosahedron within the Tsai-type cluster by nonmagnetic Y disrupts the commensurate magnetic ordering in the approximant phase.
Starting Page	060103
Ending Page	060103
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1103/PhysRevB.94.060103
Volume Number	94
Alternate Webpage(s)	https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1569&context=physastro_pubs
Alternate Webpage(s)	https://link.aps.org/accepted/10.1103/PhysRevB.94.060103
Alternate Webpage(s)	https://doi.org/10.1103/PhysRevB.94.060103
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article