（Sm_（0．08）Dy_（0．12））Fe_2超磁致伸缩材料研究

Study of Highly Magnetostriction on (Sm_(0.88)Dy_(0.12))Fe_2

用真空电弧炉熔炼了（Ｓｍ０．０８Ｄｙ０．１２）Ｆｅ２母合金，在不同温度下进行真空退火，退火温度分别为８６０℃和７００℃，退火时间为７２ｈ，发现当经过８６０℃７２ｈ退火后，得到较理想的磁致伸缩系数｜λ１１－λ⊥｜＝１４２０×１０－６，对此样品进行了物相、结构以及机理的分析讨论．

Alloy (Sm0.88Dy0.12)Fe2 was prepared with electrical arc furnace in vacuum and the samples were annealed at 860℃ and 700℃ respectively. It is discovered that the magnetostriction |λ11-λ⊥|is 1420×10-6 after annealing at 860℃ for 72 hours. with the x-ray diffraction spectra and the photo of electron microprobe, the discussion was made on the basis of the theory of the diffusion.