Formation of double ring patterns on Co{sub 2}MnSi Heusler alloy thin film by anodic oxidation under scanning probe microscope

Journal Article · Fri Feb 15 00:00:00 EST 2013 · AIP Advances

DOI:https://doi.org/10.1063/1.4794160· OSTI ID:22105388

Toutam, Vijaykumar; Singh, Sandeep ^[1]; Pandey, Himanshu ^[2]; Budhani, R. C. ^[1]

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1. National Physical Laboratory, New Delhi - 110012 (India)
2. Condensed Matter - Low Dimensional Systems Laboratory, Department of Physics, Indian Institute of Technology, Kanpur - 208016 (India)

Double ring formation on Co{sub 2}MnSi (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 formation 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.

• OSTI ID: 22105388
• Journal Information: AIP Advances, Vol. 3, Issue 2; Other Information: (c) 2013 Copyright 2013 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License.; Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANODIZATION
ATOMIC FORCE MICROSCOPY
COBALT
COBALT ALLOYS
ELECTRIC CONDUCTIVITY
HEUSLER ALLOYS
LANTHANUM OXIDES
MAGNETIC FIELDS
OXIDATION
RINGS
SEGREGATION
SILICON ALLOYS
THIN FILMS
X RADIATION