Magnetic properties of equiatomic CrMnFeCoNi

Tuning the Magnetic Properties of the CrMnFeCoNi Cantor Alloy

“…Our measurements of magnetic susceptibility on more than twenty Cantor alloy samples with varying compositions reveal that increasing the relative amount of ferromagnetic elements, such as Fe, enhances the overall magnetization, while larger quantities of antiferromagnetic elements decrease the magnetization. This observation is consistent with previous Cantor alloy investigations, which reported Fe, Co, and Ni tend to align ferromagnetically while Cr and Mn are typically antiferromagnetic [23,24,26]. Herein, these trends are quantified by least squares analysis performed using effective moments of each of the measured samples, revealing that element-specific magnetic moments can be estimated for samples that are close to the equiatomic composition.…”

“…Not only are the magnetic properties of the alloy highly sensitive to annealing and cold-working [28][29][30], high-temperature anneals do not eliminate the effects of cold-working. Analysis which combined modified Curie-Weiss fitting, specific heat measurements, DFT calculations and Hall measurements has also revealed a large Stoner enhancement factor [24].…”

“…Much work has been done regarding the mechanical properties of Cantor alloys [6][7][8][9][10][11], as well as the magnetic properties of similar compounds [12][13][14][15][16][17][18][19][20][21][22][23], and previous studies on the equiatomic Cantor alloy specifically have revealed the presence of two magnetic transitions. The higher temperature transition occurs at approximately 85 K, and has been identified as spinglass-like through µSR studies [24]. At approximately 43 K, the material transitions again, this time into a ferrimagnetic state, as determined by density functional theory (DFT) simulations and experimental analysis of the magnetic entropy [24].…”

“…The higher temperature transition occurs at approximately 85 K, and has been identified as spinglass-like through µSR studies [24]. At approximately 43 K, the material transitions again, this time into a ferrimagnetic state, as determined by density functional theory (DFT) simulations and experimental analysis of the magnetic entropy [24]. Despite the small size of the ferrimagnetic transition, prior work has suggested that it is not due to an impurity phase [24].…”

“…At approximately 43 K, the material transitions again, this time into a ferrimagnetic state, as determined by density functional theory (DFT) simulations and experimental analysis of the magnetic entropy [24]. Despite the small size of the ferrimagnetic transition, prior work has suggested that it is not due to an impurity phase [24]. Other studies have observed notable differences in the size and temperature Email address: jhamlin@ufl.edu (James J. Hamlin) of these transitions, likely due to the significant processing dependence of the Cantor alloy [25][26][27].…”