Formation of double ring patterns on Co2MnSi Heusler alloy thin film by anodic oxidation under scanning probe microscope

Vijaykumar Toutam; Himanshu Pandey; Sandeep Singh; R. C. Budhani

doi:10.1063/1.4794160

Formation of double ring patterns on Co2MnSi Heusler alloy thin film by anodic oxidation under scanning probe microscope

Materials Science 2013-04-04 v2

Authors: Vijaykumar Toutam , Himanshu Pandey , Sandeep Singh , R. C. Budhani

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Abstract

Double ring formation on Co2MnSi (CMS) films is observed at electrical breakdown voltage during local anodic oxidation (LAO) using atomic force microscope (AFM). Corona effect and segregation of cobalt in the vicinity of the rings is studied using magnetic force microscopy and energy dispersive spectroscopy. Double ring forma-tion is attributed to the interaction of ablated material with the induced magnetic field during LAO. Steepness of forward bias transport characteristics from the unperturbed region of the CMS film suggest a non equilibrium spin contribution. Such mesoscopic textures in magnetic films by AFM tip can be potentially used for memory storage applications.

Keywords

Co2MnSi Heusler alloy local anodic oxidation atomic force microscope double ring patterns magnetic force microscopy memory storage

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@article{arxiv.1303.7470,
  title  = {Formation of double ring patterns on Co2MnSi Heusler alloy thin film by anodic oxidation under scanning probe microscope},
  author = {Vijaykumar Toutam and Himanshu Pandey and Sandeep Singh and R. C. Budhani},
  journal= {arXiv preprint arXiv:1303.7470},
  year   = {2013}
}

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7 pages, 5 figures

Formation of double ring patterns on Co2MnSi Heusler alloy thin film by anodic oxidation under scanning probe microscope

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