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将600℃退火后的超磁致伸缩材料(Tb0.27Dy0.73)0.3Fe0.7薄膜作为Ni80.2Fe14.1Si0.2Mn0.4Mo5.1三明治膜的基底，制备出四层膜.结果表明：附加的磁致伸缩并没有减小材料的巨磁阻抗(GMI)效应，而由于磁场下磁致伸缩材料的应力效应影响了三明治膜中的各向异性场，使三明治膜的GMI效应增大了4倍.再将制备态的四层膜在280℃下真空退火，退火态四层膜也增大了三明治膜的GMI效应，但可能由于磁致伸缩向磁性层中的扩散，其GMI效应相对于制备态四层膜则有所降低.
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关键词:
- 巨磁阻抗(GMI)效应 /
- 三明治膜 /
- TbDyFe薄膜 /
- 各向异性场
The Ni80.2Fe14.1Si0.2Mn0.4Mo5.1 sandwiched films are prepared on the magnetostrictive (Tb0.27Dy0.73)0.3Fe0.7 film substrate. Due to magnetostrictive stress effect on magnetic anisotropy which is believed to be critical for the giant magneto-impedance (GMI) effect, the GMI ratio is seen to increase sharply in the magnetic fields. The GMI effect also increases when the samples are annealed at 280℃. But the GMI ratio is still less than that of the as-deposited films.-
Keywords:
- giant magnetoimpedance (GMI) effect /
- sandwiched films /
- TbDyFe film /
- magnetic anisotropy
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中国物理学会期刊
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