Influence of Annealing Conditions on Magnetic Properties of Ni₅₀Mn_50−xIn_x Heusler-Type Alloys

Abstract

Magnetic measurements in Ni₅₀Mn_50−xIn_x alloys were performed in order to investigate the effect of the degree of order on the magnetic properties for specimens annealed at different temperatures. It was confirmed that Curie temperature, T_C, and spontaneous magnetization, μ_m, in as-quenched specimens with a low degree of order exhibited composition dependence of indium basically similar to those in as-annealed ones with a high degree of order reported in a previous paper. However, especially in the In-rich region of x>25, both the T_C and the μ_m obtained from the as-quenched specimens were lower than those from the as-annealed specimens.