Study of the magnetization reversal in individual nickel nanowires

被引：106
|
作者：
Pignard, S
Goglio, G
Radulescu, A
Piraux, L
Dubois, S
Declémy, A
Duvail, JL
机构：
[1] Unite Physicochim & Phys Mat, B-1348 Louvain, Belgium
[2] Met Phys Lab, UMR 6630, F-86960 Futuroscope, France
[3] Inst Mat Nantes, Lab Phys Cristalline, F-44322 Nantes, France
来源：
JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 02期
关键词：
D O I：
10.1063/1.371947
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetization reversal of Ni nanowires was studied by anisotropic magnetoresistance measurements at temperatures between 15 and 300 K. The wires, synthesized by electrodeposition in a nanoporous polycarbonate membrane, are regular cylinders 22 mu m long with a diameter of 75 or 35 nm. The nucleation field was measured on individual nanowires as a function of the angle between the applied field and the wire axis. The results are quantitatively analyzed using classical magnetization reversal theories. Measurements of the nucleation field first obtained as a function of temperature evidence an extra uniaxial anisotropy induced by the contraction of the membrane at low temperature. Combining SQUID measurements and x-ray diffractometry at different temperatures, a clear picture of the large magnetoelastic effect was obtained. (C) 2000 American Institute of Physics. [S0021-8979(00)03902-5].
引用
收藏
页码：824 / 829
页数：6
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