New 4234-type intermetallic borocarbides: Synthesis, structure, and magnetic properties

J. R. Link, S. M. Loureiro, C. Kealhofer, H. W. Zandbergen, R. J. Cava

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

New 4234-type compounds, structurally related to the n = 4 member of the (LnC)nNi2B2 homologous series of intermetallic borocarbides, were synthesized by arc-melting. Here we report that this structure type, previously observed only for Ni-based compounds, can be synthesized for a large number of transition elements. Further, we find it to be stable for medium through small lanthanides. The compounds have formulas Y4T2B3C4 [T = Fe, Co, Ni, Ru, Rh, and Ir], Ln4T2B3C4 [Ln = Er, Dy, and Gd; T = Fe and Co], Lu4Ni2B3C4, and Sc4Ni2B3C4. The unit cells are pseudo-tetragonal, with lattice parameters ranging from a = 3.348(1) Å, c = 25.90(1) Å for Sc4Ni2B3C4 to a = 3.624(1) Å, c = 26.63(1) Å for Y4Rh2B3C4. Structural investigation by exit-wave reconstruction is reported, showing the presence of twinning on the unit cell scale. The phases show either Curie-Weiss behavior with very small magnetic moments per transition metalatom or temperature-independent paramagnetism.

Original languageEnglish (US)
Pages (from-to)246-251
Number of pages6
JournalJournal of Solid State Chemistry
Volume164
Issue number2
DOIs
StatePublished - Jan 1 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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