摘要
研究了不同Tb/Dy比例对(TbxDy1-x)Fe1.95(x=0.30,0.32,0.34和0.35)合金的矫顽力、自旋再取向温度以及变温和加压磁致伸缩性能等的影响。结果表明,随着x值的增大,合金的矫顽力增大,自旋再取向温度降低。x为0.34时,合金的磁致伸缩温度系数较小,更适用于低温且工作温度变化大的环境。随着x值的增大,当施加压应力时,合金的磁致伸缩系数λ有明显的"跳跃效应",低场下尤为突出。
The influence of Tb/Dy ratio on the coercive force, spinning reorientation temperature, magnetostrictive coefficient under variable temperatures and pre-compressive stress conditions of （ TbxDy1 -x ） Fe1. 95 （x = 0.30, 0.32, 0.34 and 0.35 ） was investigated. The results showed that, by increasing the ratio of Tb/ Dy, the coercive force of （TbxDy1-x）Fe1.95 increased, while the spinning reorientation temperature Tr decreased. When x was O. 34, the temperature coefficient for this magnetostrictive material was very small, so this material was suitable for application in specific working circumstance of lower and sharply changed temperature. Under pre-compressive stress, the alloy with higher content of Tb performed better jump effect, especially in lower magnetic field.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2009年第5期691-695,共5页
Chinese Journal of Rare Metals
基金
国家自然科学基金项目(50801006)
北京市自然科学基金项目(2042012
2062012)
国家高技术研究发展计划(863计划)项目(2006AA03Z106)资助
关键词
磁致伸缩
磁滞回线
自旋再取向
跳跃效应
magnetostriction
magnetic hysteresis loop
spinning reorientation
jump effect
