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中国物理学会期刊

多层膜线列阵的巨磁电阻和层间耦合

CSTR: 32037.14.aps.47.2046

GIANT MAGNETORESISTANCE AND INTERLAYER EXCHANGE COUPLING IN THE WIRE ARRAYS OF MULTILAYER

CSTR: 32037.14.aps.47.2046
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  • 研究了Fe/[NiFe/Cu]30多层膜线列阵的室温磁电阻和磁滞特性,列阵的线密度为250和500线/mm,采用激光全息光刻和离子束刻蚀技术制成.线列阵样品的磁性与刻线加工前的连续膜有明显区别.最大巨磁电阻率有增也有减,最大增量为3.32%.外场平行线轴的矫顽力有的增加有的不变.这除了因为原始连续膜层间耦合态有差异之外,还与由线列阵加工引入的单轴各向异性和其它变化相关.

     

    The room temperature magnetoresistance (MR) and hysteresis in the wire arrays of Fe/[NiFe/Cu]30 muitilayer were investigated. These arrays were fabricated by laser lithography and ion beam etching techniques. The magnetic properties of the wire array is distinctly different compared with the continous film. the maximum MR ratio is increased for some arrays, and for some other arrays this MR ratio is decreased. A marked increased in coercivity of some arrays is seen for the field applied along the wire axis, but for some other arrays the coercivity almost remains constant. These results depend on the defferene in interlayer exchange coupling for original continous films and also depend on the uniaxial anisotroy and the other change caused by the wire fabrication of array.

     

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