Monoclinic 122-Type BaIr2Ge2 with a channel framework: A structural connection between clathrate and layered compounds

Xin Gui, Tay Rong Chang, Tai Kong, Max T. Pan, Robert J. Cava, Weiwei Xie

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A new 122-type phase, monoclinic BaIr2Ge2 is successfully synthesized by arc melting; X-ray diffraction and scanning electron microscopy are used to purify the phase and determine its crystal structure. BaIr2Ge2 adopts a clathrate-like channel framework structure of the monoclinic BaRh2Si2-type, with space group P21/c. Structural comparisons of clathrate, ThCr2Si2, CaBe2Ge2, and BaRh2Si2 structure types indicate that BaIr2Ge2 can be considered as an intermediate between clathrate and layered compounds. Magnetic measurements show it to be diamagnetic and non-superconducting down to 1.8 K. Different from many layered or clathrate compounds, monoclinic BaIr2Ge2 displays a metallic resistivity. Electronic structure calculations performed for BaIr2Ge2 support its observed structural stability and physical properties.

Original languageEnglish
Article number818
JournalMaterials
Volume10
Issue number7
DOIs
Publication statusPublished - 2017 Jul 18

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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