Author/Authors :
Paduani، نويسنده , , C. and Migliavacca، نويسنده , , A. and Sebben، نويسنده , , M.L. and Ardisson، نويسنده , , J.D. and Yoshida، نويسنده , , M.I. and Soriano، نويسنده , , S. and Kalisz، نويسنده , , M.، نويسنده ,
Abstract :
The magnetic behavior of Ni2+xMn1−xAl alloys around the stoichiometric 2:1:1 composition was investigated with several experimental techniques. The results of low-temperature magnetization measurements indicate that a competition mechanism between ferromagnetism and antiferromagnetism is expected in off-stoichiometric alloys. Although the Curie temperature is strongly dependent on the composition, the saturation magnetization has an unsystematic variation for deviations from the stoichiometric Ni2MnAl alloy. A reentrant-spin–glass behavior is observed below 50 K.
Keywords :
A. Heusler alloys , A. Ni–Mn–Al , D. Antiferromagnetism , D. Ferromagnetism
