Effects of varying composition on magnetic properties of Cantor alloys*

Magnetic and transport properties of CrMnFeCoNi high-entropy alloys were examined between 5 K and 300 K and in fields up to 9 T. The alloy composition was varied by adjusting the relative amount of one element while leaving equal amounts of the others, leading to compositions such as Mn_x(CrFeCoNi)_1-x. Several magnetic signatures are identified, including one associated with a ferromagnetic transition near 43 K, which is relatively independent of composition, leading to questions of whether it is an intrinsic or extrinsic (impurity) feature. Using least squares fitting for over 30 samples, the local magnetism from each element is approximated, thereby allowing the composition of a near-zero net moment alloy to be identified.