%0 Journal Article %T Invar Like Behavior of the Cr 2 AlC MAX Phase at Low Temperature %+ Institut Pprime (PPRIME) %+ Laboratoire Léon Brillouin (LLB - UMR 12) %+ Laboratoire Nano-Magnétisme et Oxydes (LNO) %A Jaouen, Michel %A Chartier, Patrick %A Cabioc’h, Thierry %A Mauchamp, Vincent %A André, Gilles %A Viret, Michel %< avec comité de lecture %@ 0002-7820 %J Journal of the American Ceramic Society %I Wiley %V 96 %N 12 %P 3872 - 3876 %8 2013 %D 2013 %R 10.1111/jace.12635 %Z Physics [physics]Journal articles %X The structure of Cr AlC has been studied using neutron scattering experiments performed in atemperature range running from room temperature down to 1.8 K. It is shown that the unit cell volumedoes not vary significantly below 80 K. This anomalous behavior, correlated with the existence of aweak ferromagnetic ordering revealed from superconducting quantum interference device experiments,is similar to that characteristic of Invar alloys. Just above the Curie temperature T ~ 73 ± 5 K, theCr AlC undergoes significant distortions of the octahedron and triangular prisms units. Above 100 K,Cr AlC follows an usual thermal expansion. %G English %L cea-01498669 %U https://cea.hal.science/cea-01498669 %~ CEA %~ CNRS %~ UNIV-POITIERS %~ IRAMIS-SPEC %~ IRAMIS-LLB %~ PPRIME %~ IRAMIS %~ GS-PHYSIQUE