Electrical and Magnetic Properties of Selected Fe-Based High Entropy Alloys

K. Perzyńska a, A. Go a, K. Szymański a, M. Biernacka a, Ł. Hawełek b, B. Kalska-Szostko c, D. Oleszak d, K. Rećko a, J. Waliszewski a and P. Zaleski a aFaculty of Physics, University of Białystok, Lipowa 41, 15-424 Białystok, Poland bInstitute of Non Ferrous Metals in Gliwice, J. Sowińskiego 5, 44-100 Gliwice, Poland cInstitute of Chemistry, University of Białystok, Hurtowa 1, 15-399 Białystok, Poland dFaculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warszawa, Poland

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The electrical and magnetic properties of Fe0.5A0.5 alloys are presented, where the A corresponds to various compositions of the elements: A = (Al, Si, V, Cr, Co, Ga, Ni, Ge). The system is closely related to the known family of high entropy alloys. The samples were synthesized by arc melting and/or melt spinning technique and exhibit a regular type of crystal structure. Lattice parameters are systematically smaller than the estimates based on metallic radiuses of the elements. Temperature dependences of resistivities show maxima for some compositions. This behavior is consistent with results of electronic structure calculations, where a low density of states at the Fermi level were predicted. Also the measured magnetic moments are in good agreement with results of calculations. It is thus presented that some physical properties can be designed by appropriate choice of the chemical composition within the same simple structure.

DOI: 10.12693/APhysPolA.126.999 PACS numbers: 71.23.-k; 71.55.Ak; 72.15.-v; 72.15.Eb; 75.50.Bb; 82.80.Ej