CAJ | 학술논문

研究了覆盖层为铁磁性的Fe和非铁磁性的Ti、Cu的Co/Cu/Co三明治在室温和低温下的巨磁电阻效应。实验结果表明，室温下有覆盖层时,Co/Cu/Co三明治的巨磁电阻效应值没有明显变化，但以Fe为覆盖层的样品的矫顽力和饱和场明显减小，而Ti、Cu覆盖层对三明治样品的矫顽力和饱和场无太大的影响。温度降低时，覆盖层使Co/Cu/Co三明治的巨磁电阻值显著增加，表明样品的巨磁电阻效应与覆盖层及其与上层Co所形成的界面密切相关。
연구료복개층위철자성적Fe화비철자성적Ti、Cu적Co/Cu/Co삼명치재실온화저온하적거자전조효응。실험결과표명，실온하유복개층시,Co/Cu/Co삼명치적거자전조효응치몰유명현변화，단이Fe위복개층적양품적교완력화포화장명현감소，이Ti、Cu복개층대삼명치양품적교완력화포화장무태대적영향。온도강저시，복개층사Co/Cu/Co삼명치적거자전조치현저증가，표명양품적거자전조효응여복개층급기여상층Co소형성적계면밀절상관。
The giant magnetoresistance (GMR) in Co/Cu/Co sandwiches with ferromagnetic Fe capping layer or nonmagnetic Ti or Cu capping layer was investigated at room temperature and low temperature. At room temperature, it is found that the coercivity and saturation field of Co/Cu/Co sandwiches with Fe capping layer are obviously reduced, though the GMR values of Co/Cu/Co sandwiches with all capping layers show no obvious change. However, the Ti, Cu capping layers don't affect the coercivity and saturation field of Co/Cu/Co sandwiches. With temperature decreasing, the capping layers strong－ly enhancethe GMR values of Co/Cu/Co sandwiches. All the results suggest that the giant magneto－resistance in Co/Cu/Co sandwich is strongly influenced by capping layer and the interface between mag－netic Co up－layer and capping layer.