Synthesis, crystal structure and physical properties of Yb 2 Pd 3 Ge 5

R. Freccero, S. H. Choi, P. Solokha, S. De Negri, T. Takeuchi, S. Hirai, Paolo Mele, A. Saccone

Research output: Contribution to journalArticle

Abstract

A systematic study on the existence of R 2 Pd 3 Ge 5 intermetallics with heavy rare earth metals (R = Gd–Lu) was conducted; only the Yb 2 Pd 3 Ge 5 was revealed to exist. Its crystal structure was established by X-ray powder diffraction and refined by means of Rietveld method. This compound crystallizes in the orthorhombic U 2 Co 3 Si 5 structure type (Ibam, oI40, Z = 4, a = 10.2628(1), b = 12.0580(1), and c = 5.98251(6) Å), which represents an ordered derivative of the tI10-ThCr 2 Si 2 prototype, ubiquitous among intermetallics. Magnetization and susceptibility measurements indicate that Yb 2 Pd 3 Ge 5 is a paramagnet with μ eff close to 0.8 μ B /Yb-atom, suggesting a nearly divalent Yb state. Electrical resistivity and Seebeck coefficient of the studied compound as a function of temperature confirm its metallic-like behavior.

Original languageEnglish
Pages (from-to)601-607
Number of pages7
JournalJournal of Alloys and Compounds
DOIs
Publication statusPublished - 2019 Apr 30

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Keywords

  • Crystal structure
  • Germanides
  • Magnetic properties
  • Yb intermetallics

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Freccero, R., Choi, S. H., Solokha, P., De Negri, S., Takeuchi, T., Hirai, S., ... Saccone, A. (2019). Synthesis, crystal structure and physical properties of Yb 2 Pd 3 Ge 5 Journal of Alloys and Compounds, 601-607. https://doi.org/10.1016/j.jallcom.2018.12.306