It was found that the sample density increases with the increasing compaction pressure , while the resistivity decrease with the increasing compaction pressure . the compaction pressure between 48mpa and 148mpa has a little effect on the magnetostriction 結(jié)果表明,密度隨成形壓力的增加而增加,電阻率則隨成形壓力的增加而減小,在48mpa 148mpa內(nèi),成形壓力對(duì)磁致伸縮性能的影響不大。