(Ca0.95Cd0.10)Pd2Cd3, SrPd2Cd3 and (Eu0.95Cd0.10)Pd2Cd3 with YNi2Al3 type structure – crystal chemistry and magnetic hyperfine interactions
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Michael Johnscher
Abstract
The intermetallic compounds (Ca0.95Cd0.10)Pd2Cd3, SrPd2Cd3 and (Eu0.95Cd0.10)Pd2Cd3 were synthesized from the elements in sealed niobium ampoules in an induction furnace. The polycrystalline samples were characterized through their Guinier powder patterns. The structures were refined from single crystal X-ray diffractometer data: YNi2Al3 type, P6/mmm, a = 984.61(5), c = 455.33(3) pm, wR2 = 0.0216, 376 F2 values, 21 variables for (Ca0.95Cd0.10)Pd2Cd3, a = 998.55(8), c = 453.65(3) pm, wR2 = 0.0296, 341 F2 values, 17 variables for SrPd2Cd3 and a = 992.57(4), c = 457.34(2) pm, wR2 = 0.0300, 384 F2 values, 21 variables for (Eu0.95Cd0.10)Pd2Cd3. The striking crystal chemical motif in the three structures is a planar [PdCd2] Kagome-type layer. The two crystallographically independent Ca (Sr, Eu) atoms have a coordination number of 18 by 6 Pd and 12 Cd atoms. The calcium and europium compound show a small degree of Ca (Eu) substitution by Cd2 dumb-bells with 281 pm Cd–Cd in (Eu0.95Cd0.10)Pd2Cd3. Temperature dependent magnetic susceptibility measurements show Curie–Weiss behaviour (7.63(1) µB/Eu atom) for the europium compound and the onset of ferromagnetic ordering at TC = 14.9(2) K. The divalent character of europium is corroborated by 151Eu Mössbauer spectroscpy.
Acknowledgment
We thank Dipl.-Ing. U. Ch. Rodewald for collecting the single crystal data.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Artikel in diesem Heft
- Frontmatter
- In this issue
- Inorganic Crystal Structures (Original Paper)
- Colloidal nanocrystal synthesis of alkaline earth metal sulfides for solution-processed solar cell contact layers
- Crystal structures of biocompatible Mg-, Zn-, and Co-whitlockites synthesized via one-step hydrothermal reaction
- (Ca0.95Cd0.10)Pd2Cd3, SrPd2Cd3 and (Eu0.95Cd0.10)Pd2Cd3 with YNi2Al3 type structure – crystal chemistry and magnetic hyperfine interactions
- Ni3Sn4 and FeAl2 as vacancy variants of the W-type (“bcc”) structure
- A new layered potassium-based molybdenum–tungsten monophosphate: synthesis, crystal structure, XPS and magnetic studies
- Effect of different boron sources on the copper borates in solid-state synthesis
- Uranyl silicate nanotubules in Rb2[(UO2)2O(Si3O8)]: synthesis and crystal structure
Artikel in diesem Heft
- Frontmatter
- In this issue
- Inorganic Crystal Structures (Original Paper)
- Colloidal nanocrystal synthesis of alkaline earth metal sulfides for solution-processed solar cell contact layers
- Crystal structures of biocompatible Mg-, Zn-, and Co-whitlockites synthesized via one-step hydrothermal reaction
- (Ca0.95Cd0.10)Pd2Cd3, SrPd2Cd3 and (Eu0.95Cd0.10)Pd2Cd3 with YNi2Al3 type structure – crystal chemistry and magnetic hyperfine interactions
- Ni3Sn4 and FeAl2 as vacancy variants of the W-type (“bcc”) structure
- A new layered potassium-based molybdenum–tungsten monophosphate: synthesis, crystal structure, XPS and magnetic studies
- Effect of different boron sources on the copper borates in solid-state synthesis
- Uranyl silicate nanotubules in Rb2[(UO2)2O(Si3O8)]: synthesis and crystal structure
