Effects of Rapid Recurrent Thermal Annealing on Giant Magnetoresistance NiFe/Ag Multilayers |
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引用本文: | 文岐业,张怀武,蒋向东,唐晓莉,张万里.Effects of Rapid Recurrent Thermal Annealing on Giant Magnetoresistance NiFe/Ag Multilayers[J].中国物理快报,2003,20(12):2242-2245. |
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作者姓名: | 文岐业 张怀武 蒋向东 唐晓莉 张万里 |
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作者单位: | SchoolofMicro-ElectronicandSolid-electronic,UniversityofElectronicScienceandTechnologyofChina,Chengdu610054 |
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摘 要: | NiFe/Ag multilayers were prepared by dc sputtering onto glass-ceramic substrates directly at room temperature. The samples were thermally processed by rapid recurrent thermal anneal (RRTA). We studied the effects of RRTA on giant magnetoresistance (GMR) NiFe/Ag multilayer by contro11ing the anneal temperature as well as the rapid anneal cycle. The samples after three RRTA cycles have a similar annealing temperature dependence of GMR responses to the ordinary annealed samples. With the increasing anneal cycle, the GMR response improved at first and then reached an unexpected high value of 9% before descent rapidly. Microstructure study shows that this effect is ascribed to the transformation of continuous NiFe layer into discontinuous one, and then into a granular like film in a step-by-step way.
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关 键 词: | 银掺杂 铁化镍多层材料 磁阻 X射线衍射 半导体材料 |
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