Temperature dependences of the upper critical field and the Ginzburg–Landau parameter of Li2Pd3B from magnetization measurements

We present temperature dependences of the upper critical magnetic field Hc2 and the Ginzburg–Landau parameter κ for a ternary boride superconductor Li2Pd3B obtained from magnetization measurements. A specially developed scaling approach was used for the data analysis. The resulting Hc2(T) curve turns out to be surprisingly close to predictions of the BCS theory. The magnetic field penetration depth λ, evaluated in this work, is in excellent agreement with recent muon-spin-rotation experiments. We consider this agreement as an important proof of the validity of our approach.