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

T. Yamada; H. Takakura; T. Kong; P. Das; W. T. Jayasekara; A. Kreyssig; G. Beutier; P. C. Canfield; M. De Boissieu; A. I. Goldman

doi:10.1103/PhysRevB.94.060103

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

T. Yamada, H. Takakura, T. Kong, P. Das, W. T. Jayasekara, A. Kreyssig, G. Beutier, P. C. Canfield, M. De Boissieu, A. I. Goldman

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

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-YbCd5.7 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-ScZn7.33, and their differences with i-YbCd5.7 and i-Ca15Cd85, 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 Tb1-xYxCd6 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.

Original language	English (US)
Article number	060103
Journal	Physical Review B
Volume	94
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.94.060103
State	Published - Aug 15 2016
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.94.060103

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@article{66575899e894430f8b3d4ce2a997df67,

title = "Atomic structure of the i- R -Cd quasicrystals and consequences for magnetism",

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-YbCd5.7 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-ScZn7.33, and their differences with i-YbCd5.7 and i-Ca15Cd85, 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 Tb1-xYxCd6 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.",

author = "T. Yamada and H. Takakura and T. Kong and P. Das and Jayasekara, {W. T.} and A. Kreyssig and G. Beutier and Canfield, {P. C.} and {De Boissieu}, M. and Goldman, {A. I.}",

note = "Funding Information: We thank the synchrotron SOLEIL for the allowance of beam time for the structural measurements and P. Fertey for his help in setting up the experiment on the CRISTAL beamline. Figures. Use of the Advanced Photon Source was supported by the U.S. DOE under Contract No. DE-AC02-06CH11357. Work at the Ames Laboratory was supported by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy under Contract No. DE-AC02-07CH11358. Work at Tohoku University was supported by a Grant-in-Aid for JSPS Research Fellows No. 26-2924. Work at Hokkaido University was supported by JSPS KAKENHI No. 15K04659. Work at University Grenoble Alpes was supported by ANR 2011-BS04-004-01. Part of this study was carried out within the European C-MAC network. Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = aug,

day = "15",

doi = "10.1103/PhysRevB.94.060103",

language = "English (US)",

volume = "94",

journal = "Physical Review B-Condensed Matter",

issn = "0163-1829",

publisher = "American Physical Society",

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T1 - Atomic structure of the i- R -Cd quasicrystals and consequences for magnetism

AU - Yamada, T.

AU - Takakura, H.

AU - Kong, T.

AU - Das, P.

AU - Jayasekara, W. T.

AU - Kreyssig, A.

AU - Beutier, G.

AU - Canfield, P. C.

AU - De Boissieu, M.

AU - Goldman, A. I.

N1 - Funding Information: We thank the synchrotron SOLEIL for the allowance of beam time for the structural measurements and P. Fertey for his help in setting up the experiment on the CRISTAL beamline. Figures. Use of the Advanced Photon Source was supported by the U.S. DOE under Contract No. DE-AC02-06CH11357. Work at the Ames Laboratory was supported by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy under Contract No. DE-AC02-07CH11358. Work at Tohoku University was supported by a Grant-in-Aid for JSPS Research Fellows No. 26-2924. Work at Hokkaido University was supported by JSPS KAKENHI No. 15K04659. Work at University Grenoble Alpes was supported by ANR 2011-BS04-004-01. Part of this study was carried out within the European C-MAC network. Publisher Copyright: © 2016 American Physical Society.

PY - 2016/8/15

Y1 - 2016/8/15

N2 - 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-YbCd5.7 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-ScZn7.33, and their differences with i-YbCd5.7 and i-Ca15Cd85, 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 Tb1-xYxCd6 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.

AB - 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-YbCd5.7 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-ScZn7.33, and their differences with i-YbCd5.7 and i-Ca15Cd85, 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 Tb1-xYxCd6 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.

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U2 - 10.1103/PhysRevB.94.060103

DO - 10.1103/PhysRevB.94.060103

M3 - Article

AN - SCOPUS:84985893582

VL - 94

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 6

M1 - 060103

ER -

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

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