Elastic moduli and hardness of highly incompressible platinum perpnictide PtAs2

Oliver Tschauner, Boris Kiefer, Florent Tetard, Kimberly Tait, Judith Bourguille, Andreas Zerr, Przemyslaw Dera, Alastair McDowell, Jason Knight, Simon Clark

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


PtAs2 appears to be the least compressible known arsenide with a bulk modulus of 220(5) GPa and a shear modulus of between 64 and 77 GPa. PtAs2 has a hardness of 11(1) GPa, which is remarkably high for an arsenide. These elastic and mechanical properties in combination with the known chemical inertness and the small indirect band gap add interest to the use and occurrence of PtAs2 at Pt-GaAs contacts in transistors. We note the modest fracture toughness of 1.1-1.6 MPa m1/2 of PtAs2.

Original languageEnglish
Article number101901
Pages (from-to)1-5
Number of pages5
JournalApplied Physics Letters
Issue number10
Publication statusPublished - 2 Sep 2013
Externally publishedYes


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