Robustness of the enhanced magnetic anisotropy in Ni nanowires regardless of the deposition potential

被引：8
作者：
Velazquez-Galvan, Y. [1 ]
de la Torre Medina, J. [2 ]
Piraux, L. [3 ]
Encinas, A. [1 ]
机构：
[1] Inst Potosino Invest Cient & Tecnol AC, Div Mat Avanzados, Camino Presa 2055, San Luis Potosi 78216, San Luis Potosi, Mexico
[2] Univ Nacl Autonoma Mexico, Inst Invest Mat, Unidad Morelia, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
[3] Catholic Univ Louvain, Inst Condensed Matter & Nanosci, Pl Croix Sud 1, B-1348 Louvain La Neuve, Belgium
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 497卷
关键词：
Nanowires; Nickel; Enhanced anisotropy; Confinement; Deposition potential; NICKEL; ELECTRODEPOSITION; GROWTH; ARRAYS; FABRICATION; SIZE; MICROSTRUCTURE; ORIENTATION; INHIBITION; UREA;
D O I：
10.1016/j.jmmm.2019.165992
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of the deposition potential on the structural and magnetic properties of Ni nanowires with a diameter of 40 nm and lengths varying from 16 up to 56 pm have been studied. The results show that very long NWs exhibit a large enhancement of their uniaxial magnetic anisotropy. This anisotropy reaches values as high as 1.6 x 10(6) erg/cm(3) that is comparable with the value due to the magnetostatic anisotropy contribution (approximate to 5 x 10(6) erg/cm(3)) and as shown from the results this large anisotropy is practically insensitive to the deposition potential. Moreover, as shown on shorter NWs, this enhancement of the anisotropy is not observed and interestingly the potential does induce structural changes that relate to their magnetic properties. The enhanced anisotropy observed in long NWs is a robust effect as it is independent of the potential, making this property attractive for applications where high uniaxial anisotropies are required.
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页数：9
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