Investigation of the High-Entropy Alloy Superconductor XZr \(_2\) (X = Fe, Co, Ni, Rh, Ir) Using Muon Spin Spectroscopy ( \(\mu \) SR)

This chapter delves into the application of muon spin relaxationMuon spin relaxation ( \(\mu \) SR) for studying high entropy alloy (HEA) superconductors, with a specific focus on the \(X\) Zr \(_{\textrm{2}}\) family compounds. Initially, we introduce essential concepts of the \(\mu \) SR experiment, highlighting its strengths and limitations in exploring superconducting materials. The latter part of the chapter presents a detailed examination of the experimental results related to \(X\) Zr \(_{\textrm{2}}\) , followed by an in-depth discussion of their significance.