Evidence for ferromagnetic ordering in the MAX phase (Cr0.96Mn0.04)2GeC

Materials Research Letters

H. Shaked¹  M. W. Barsoum²  A. Hoser³  O. Rivin³  J. Rosen⁴  Q. Tao⁴  E. N. Caspi⁵  A. Pesach⁵  R. Georgii⁶ 

[1] Ben-Gurion University;Drexel University;Helmholtz-Zentrum Berlin für Materialen und Energie;Linköping University;Nuclear Research Centre-Negev;Technische Universität München;

关键词: MAX phase;    neutron powder diffraction;    magnetic ordering;    transition metals magnetism;   

DOI  :  10.1080/21663831.2017.1317295

来源: DOAJ

【 摘 要 】

Magnetic ordering in the MAX phase (Cr0.96Mn0.04)2GeC is investigated by means of neutron powder diffraction (NPD). Upon cooling, the temperature dependence of the magnetization shows a two-step increase. The NPD refinement reveals that the first step, at 300 K, and the second step, at 38 K, originate from a collinear magnetic structure within the MAX phase and a spinel MnCr2O4 impurity phase, respectively. The former magnetic structure is oriented perpendicular to the c axis, with a net magnetic moment of ∼0.6(2) μB per Cr/Mn atom at 50 K. This is the first direct evidence for magnetic ordering within a bulk MAX phase.

【 授权许可】

Unknown