[15p-A202-1~12] 10.5 Application of magnetic field

△ [15p-A202-7] Enhancement of degree of order on Ni₂MnAl by magnetic field

〇(DC)Ryota Kobayashi¹, Yoshifuru Mitsui¹, Rie Umetsu², Kohki Takahashi², Keiichi Koyama¹ (1.Kagoshima Univ., 2.IMR Tohoku Univ.)

Keywords:high magnetic field, Ni2MnAl

The L2₁-Ni₂MnAl is one of the Heusler alloy. This ferromagnetic L2₁-phase is formed by annealing from quenched B2-phase. The B2/L2₁ order - disorder transition temperature is about 770 K. Because ordering takes a long time, it is difficult to synthesize L2₁-phase with high degree of order. On the other hand, the ferromagnetic phase is stabilized in a magnetic field by the gain of Zeeman energy. For investigating magnetic field effects for ordering on L2₁-Ni₂MnAl, in field annealing for B2-phase were carried out.
As the result, the magnetic properties of the sample obtained from in-field annealing were improved. This result shows that in-field annealing increased the degree of order on Ni₂MnAl.