Electrodeposition and giant magnetoresistance of  Ni<sub>80</sub>Fe<sub>20</sub>/Cu nanometer multilayers

ZHANG Weiguo; JIANG Ying; YAO Suwei

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Electrodeposition and giant magnetoresistance of  Ni₈₀Fe₂₀/Cu nanometer multilayers

更新时间：2025-12-10

- Electrodeposition and giant magnetoresistance of  Ni₈₀Fe₂₀/Cu nanometer multilayers
- CIESC Journal Issue 2, Pages: 503-507(2008)
- 作者机构：
  
  天津大学化工学院杉山表面技术研究室
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- Online First：05 February 2008，
  
  Published：05 February 2008
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ZHANG Weiguo, JIANG Ying, YAO Suwei. Electrodeposition and giant magnetoresistance of  Ni₈₀Fe₂₀/Cu nanometer multilayers[J]. CIESC Journal, 2008, (2): 503-507.
DOI：

ZHANG Weiguo, JIANG Ying, YAO Suwei. Electrodeposition and giant magnetoresistance of  Ni₈₀Fe₂₀/Cu nanometer multilayers[J]. CIESC Journal, 2008, (2): 503-507. DOI：

摘要

采用单槽控电位双脉冲技术在n-Si（111）晶面上制备了［Ni80Fe20/Cu］n多层膜，用SEM观测了多层膜的断面形貌，利用X射线衍射（XRD）表征了多层膜的超晶格结构。采用四探针法研究了多层膜的巨磁电阻（GMR）性能，结果表明，多层膜的GMR值随着Cu层厚度的变化发生周期性振荡，随着NiFe层厚度的增加先增大后减小;当样品结构为［NiFe（1.6 nm）/Cu（2.6 nm）］80时，GMR值可达6.4%;多层膜的最低饱和磁场仅为750Oe。磁滞回线测试结果表明，反铁磁耦合多层膜具有较小的矩形比，更适宜作为磁头材料。

Abstract

[Ni80Fe20/Cu]n multilayers were fabricated onto n-Si(111) substrates by double pulse potentiostatic electrodeposition from single bath. The typical cross-sectional image of multilayer was ovserved by SEM

and the superlattice structure was characterized by high-angle X-ray diffraction. The giant magnetoresistance (GMR) properties of multilayers were investigated by four-probe technique. The results indicated that

with the increase of Cu layer thickness

GMR value showed a periodical oscillation tendency

while increasing the thickness of NiFe layers

GMR value decreased after achieving its maximum. The room-temperature GMR value was up to 6.4% for [NiFe(1.6nm)/Cu(2.6nm)]80

and the minimum saturation field is only 750Oe. Hysteresis loops revealed that the anti-ferromagnetic coupled multilayers with small squareness ratio were suitable for magnetic head materials.

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Electrodeposition and giant magnetoresistance of  Ni80Fe20/Cu nanometer multilayers

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Electrodeposition and giant magnetoresistance of  Ni₈₀Fe₂₀/Cu nanometer multilayers