Synthesis, structure, magnetic and half-metallic properties of Co2−xRuxMnSi (x = 0, 0.25, 0.5, 0.75, 1) compounds
H. P. Zhang,
W. B. Liu,
X. F. Dai,
X. M. Zhang,
H. Y. Liu,
X. Yu,
G. D. Liu
Affiliations
H. P. Zhang
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, People's Republic of China
W. B. Liu
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, People's Republic of China
X. F. Dai
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, People's Republic of China
X. M. Zhang
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, People's Republic of China
H. Y. Liu
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, People's Republic of China
X. Yu
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, People's Republic of China
G. D. Liu
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, People's Republic of China
A series of Co2−xRuxMnSi (x = 0, 0.25, 0.5, 0.75, 1) Heusler compounds were successfully synthesized. The heat-treatment conditions were crucial to make the materials form a single phase with a Heusler structure. With increasing Ru content, the half-metallic gap, lattice parameters and magnetization are continuously adjustable in a wide range. The Co2−xRuxMnSi (x = 0, 0.25) compounds are rigorous half-metals and show a T3 dependence of resistance at low temperature. The Co2−xRuxMnSi (x = 0.5, 0.75, 1) Heusler compounds are the nearly half-metallic materials and show a semiconductive dependence of resistance at low temperature. The experimental magnetization is consistent with that in theory and follows the Slater–Pauling rule. The Curie temperature is higher than 750 K for all Co2−xRuxMnSi Heusler compounds.
