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Structural transition and antiferromagnetic ordering in the solid solution CePd1−xAuxAl (x = 0.1–0.9)

  • Fabian Eustermann , Matthias Eilers-Rethwisch , Maximilian K. Reimann and Oliver Janka EMAIL logo
Published/Copyright: October 30, 2020
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Zeitschrift für Naturforschung B
From the journal Zeitschrift für Naturforschung B Volume 75 Issue 11

Abstract

The intermetallic solid solution CePd1−xAuxAl (x = 0.1–0.9) has been synthesized from the elements by arc-melting and subsequent annealing in induction followed by tube furnaces. The samples were characterized using the Guinier powder diffraction technique and the structures of the nominal compositions CeAuAl and CePd0.2Au0.8Al were refined from single crystal X-ray diffractometer data. For small values of x = 0.1–0.3, the compounds crystallize in the hexagonal ZrNiAl-type structure (space group P6‾2m), while for x = 0.5–0.9 the orthorhombic TiNiSi-type structure (space group Pnma) was observed. In both structure types, the transition metal and aluminum atoms form a complex polyanionic network with the cerium atoms filling the respective cavities. The transition metal atoms are in both cases surrounded in the shape of a tri-capped trigonal prism, the connectivity of these units, however, is different. Temperature-dependent magnetic susceptibility measurements of all compounds indicated a stable trivalent oxidation state for the cerium atoms along with antiferromagnetic ordering around TN ∼ 3 K.

Keywords: aluminum; cerium; gold; intermetallics; magnetic properties; palladium

Dedicated to: Professor Robert Glaum on the occasion of his 60th birthday.

Corresponding author: Oliver Janka, Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149Münster, Germany; and Universität des Saarlandes, Anorganische Festkörperchemie, Campus C4 1, 66123Saarbrücken, Germany, E-mail:

Acknowledgments

We thank Dipl.-Ing. Ute Ch. Rodewald and Dr. R.-D. Hoffmann for the single crystal intensity data collections.

  1. Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-02-03
Accepted: 2020-03-31
Published Online: 2020-10-30
Published in Print: 2020-11-26

© 2020 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Editorial
  4. Robert Glaum zum 60. Geburtstag gewidmet
  5. Research Articles
  6. Structural transition and antiferromagnetic ordering in the solid solution CePd1−xAuxAl (x = 0.1–0.9)
  7. Ternary plumbides ATPb2 (A = Ca, Sr, Ba, Eu; T = Rh, Pd, Pt) with distorted, lonsdaleite-related substructures of tetrahedrally connected lead atoms
  8. Intergrowth of niobium tungsten oxides of the tetragonal tungsten bronze type
  9. FeBiS2Cl – A new iron-containing member of the MPnQ2X family
  10. Thallium diphosphates
  11. Behavior of beryllium halides and triflate in acetonitrile solutions
  12. Hydroflux syntheses and crystal structures of hydrogarnets Ba3[RE(OH)6]2 (RE = Sc, Y, Ho–Lu)
  13. Three of a kind? The non-isotypic triple CsCe[P2Se6], CsSm[P2Se6] and CsEr[P2Se6]
  14. The crystal structure of ZrCr2D≈4 at 50 K ≤ T ≤ 200 K
  15. High-pressure synthesis and crystal structure of HP-Al2B3O7(OH)
  16. New layered supertetrahedral compounds T2-MSiAs2, T3-MGaSiAs3 and polytypic T4-M4Ga5SiAs9 (M = Sr, Eu)
  17. Comparative photophysical study of Pt(II) complex-nanoclay hybrid materials as dry powders and hydrogels
  18. Carbon subsulfide C3S2 – synthesis by flash vacuum pyrolysis and crystal structure determination
https://doi.org/10.1515/znb-2020-0025
Keywords for this article
aluminum; cerium; gold; intermetallics; magnetic properties; palladium

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Editorial
  4. Robert Glaum zum 60. Geburtstag gewidmet
  5. Research Articles
  6. Structural transition and antiferromagnetic ordering in the solid solution CePd1−xAuxAl (x = 0.1–0.9)
  7. Ternary plumbides ATPb2 (A = Ca, Sr, Ba, Eu; T = Rh, Pd, Pt) with distorted, lonsdaleite-related substructures of tetrahedrally connected lead atoms
  8. Intergrowth of niobium tungsten oxides of the tetragonal tungsten bronze type
  9. FeBiS2Cl – A new iron-containing member of the MPnQ2X family
  10. Thallium diphosphates
  11. Behavior of beryllium halides and triflate in acetonitrile solutions
  12. Hydroflux syntheses and crystal structures of hydrogarnets Ba3[RE(OH)6]2 (RE = Sc, Y, Ho–Lu)
  13. Three of a kind? The non-isotypic triple CsCe[P2Se6], CsSm[P2Se6] and CsEr[P2Se6]
  14. The crystal structure of ZrCr2D≈4 at 50 K ≤ T ≤ 200 K
  15. High-pressure synthesis and crystal structure of HP-Al2B3O7(OH)
  16. New layered supertetrahedral compounds T2-MSiAs2, T3-MGaSiAs3 and polytypic T4-M4Ga5SiAs9 (M = Sr, Eu)
  17. Comparative photophysical study of Pt(II) complex-nanoclay hybrid materials as dry powders and hydrogels
  18. Carbon subsulfide C3S2 – synthesis by flash vacuum pyrolysis and crystal structure determination
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