Tuning Perpendicular Anisotropy Gradient in Co/Pd Multilayers by Ion Irradiation

Peter K. Greene; Julia Osten; Kilian Lenz; Jurgen Fassbender; Catherine Jenkins; Elke Arenholz; Tamio Endo; Nobuyuki Iwata; Kai Liu

doi:10.1063/1.4893569

Tuning Perpendicular Anisotropy Gradient in Co/Pd Multilayers by Ion Irradiation

Materials Science 2014-08-19 v1

Authors: Peter K. Greene , Julia Osten , Kilian Lenz , Jurgen Fassbender , Catherine Jenkins , Elke Arenholz , Tamio Endo , Nobuyuki Iwata , Kai Liu

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Abstract

The tunability of Ar+ ion irradiation of Co/Pd multilayers has been employed to create depth-dependent perpendicular anisotropy gradients. By adjusting the Ar+ kinetic energy and fluence, the depth and lateral density of the local structural modification are controlled. First-order reversal curve analysis through X-ray magnetic circular dichroism and conventional magnetometry studies show that the local structural damage weakens the perpendicular anisotropy near the surface, leading to a magnetization tilting towards the in-plane direction. The ion irradiation method is complementary to, and may be used in conjunction with, other synthesis approaches to maximize the anisotropy gradient.

Keywords

magnetic anisotropy radiation damage in silicon

Cite

@article{arxiv.1408.1659,
  title  = {Tuning Perpendicular Anisotropy Gradient in Co/Pd Multilayers by Ion Irradiation},
  author = {Peter K. Greene and Julia Osten and Kilian Lenz and Jurgen Fassbender and Catherine Jenkins and Elke Arenholz and Tamio Endo and Nobuyuki Iwata and Kai Liu},
  journal= {arXiv preprint arXiv:1408.1659},
  year   = {2014}
}

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17 pages, 4 figures, 1 table

Tuning Perpendicular Anisotropy Gradient in Co/Pd Multilayers by Ion Irradiation

Abstract

Keywords

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