Figure 3
From: Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe13
27Al NMR (MAS) spectrum of a powdered single crystal of UBe13−xAlx in as-grown condition. Central lines for Al incorporated in UBe13−xAlx (central line δ = 1915 ppm, circles) and Al flux residue (δ = 1635 ppm, asterisks) are indicated by red and blue arrows, respectively. Inset: Temperature dependence of the Al-signal shift in UBe13−xAlx (red circles), scaled as χ(T) = 2.38μB/(T + 85)20, along with the linear extrapolation of the data (dashed, black line).
