ACTA

Critical Behavior Studies in the Vicinity of the Curie Temperature in the MnCoGe Alloy

K. Kutynia^a, A. Przybył^a, M. Gębara^b, M. Rychta^a, I. Wnuk^a, P. Gębara^a
^aDepartment of Physics, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, Poland
^bOffice of European Projects, Jan Długosz University in Częstochowa, Waszyngtona 4/8, 42-200 Częstochowa, Poland

Full Text PDF

The main goal of the present work was to study the critical behavior in the MnCoGe alloy in the vicinity of the critical temperature T_C. The second-order phase transition from ferro- to paramagnetic state was preliminarily confirmed by the positive slope of the Arrott plots. The critical exponents have been revealed using the Kouvel-Fisher method and yield β=0.474±0.005, γ=0.917±0.005, and δ=2.985±0.005. The Curie temperature for the MnCoGe equals 293.3±0.1 K.

DOI:10.12693/APhysPolA.144.329
topics: magnetocaloric materials, critical behavior, the Curie temperature