Browsing by Author "Strydom, A.M."

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Magnetic behaviour of the Cr-Al alloy system around the triple point
    (South African Institute of Physics, 2011) Sheppard, C.J; Prinsloo, A.R.E.; Alberts, H.L.; Strydom, A.M.; Muchono, Blessed
    Electrical resistivity and specific heat measurements on a series of Cr1-xAlx (0 ≤ x ≤ 0.034) alloy single crystals are reported. The results indicate that the triple point, where the incommensurate and commensurate spin-density-wave phases coexist with the paramagnetic phase, is situated close to T = 0 K on the magnetic phase diagram.
  • Thumbnail Image
    Item
    Spin-density-wave behaviour of the (Cr100-xAlx)95Mo5 alloy system
    (SAIP, 2011) Muchono, Blessed; Prinsloo, A.R.E.; Sheppard, C.J; Alberts, H.L.; Strydom, A.M.
    Electrical resistivity, Seebeck coefficient and specific heat measurements on a (Cr100-xAlx)95Mo5, 0 8.1 at.% Al alloy system are reported. The results indicate two possible quantum critical points in the magnetic phase diagram of this system. One is an incommensurate spin-density-wave – paramagnetic quantum critical point situated at 1.5 at.% Al and the other a paramagnetic – commensurate spin-density-wave critical point at 5 at.% Al. We forward experimental evidence that this system harbours two spin-density-wave related quantum critical points which presents an unusually rich case study for magnetic quantum criticality of the itinerant kind.