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Title: Origin and control of magnetic exchange coupling in between focused electron beam deposited cobalt nanostructures

We demonstrate the existence and control of inter-particle magnetic exchange coupling in densely packed nanostructures fabricated by focused electron beam induced deposition. With Xe beam post-processing, we have achieved the controlled reduction and eventual elimination of the parasitic halo-like cobalt deposits formed in the proximity of intended nanostructures, which are the identified source of the magnetic exchange coupling. The elimination of the halo-mediated exchange coupling is demonstrated by magnetic measurements using Kerr microscopy on Co pillar arrays. Electron microscopy studies allowed us to identify the mechanisms underlying this process and to verify the efficiency and opportunities of the described nano-scale fabrication approach.
Authors:
; ; ;  [1] ; ;  [1] ;  [2]
  1. CIC nanoGUNE Consolider, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian (Spain)
  2. (Spain)
Publication Date:
OSTI Identifier:
22217962
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; COBALT; CONTROL; DEPOSITION; DEPOSITS; EFFICIENCY; ELECTRON BEAMS; ELECTRON MICROSCOPY; ELECTRONS; EXCHANGE INTERACTIONS; FABRICATION; MAGNETO-OPTICAL EFFECTS; NANOSTRUCTURES