中国物理B ›› 2010, Vol. 19 ›› Issue (11): 117504-117801.doi: 10.1088/1674-1056/19/11/117504
王智彬, 刘敬华, 蒋成保
Wang Zhi-Bin(王智彬), Liu Jing-Hua(刘敬华), and Jiang Cheng-Bao(蒋成保)†
摘要: The effect of the orientation on the magnetostriction in Fe81Ga19 alloy has been investigated experimentally and theoretically. The Fe81Ga19 [001] and [110] oriented crystals were prepared and the magnetostriction was measured under different pre-stress. The saturation magnetostriction of the [001] oriented crystal increases from 170×10-6 to 330×10-6 under the pre-stress from 0 to 50 MPa. The [110] oriented crystal has a saturation magnetostriction from 20×10-6 to 140×10-6 with the compressive pre-stress from 0 to 40 MPa. The magnetostriction of [001] and [110] oriented crystals has been simulated based on the phenomenological theory. The domain rotation path has been determined and the resultant magnetostriction calculated under different pre-stress. The experimental and simulated results both show that the [001] oriented crystal exhibits better magnetostriction than [110] oriented crystal. The enhancement of the saturation magnetostriction by the compressive pre-stress in the [110] oriented crystal is higher than that in the [001] oriented crystal.
中图分类号: (Magnetomechanical effects, magnetostriction)