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A Co-59 NMR study to observe the effects of ball milling on small ferromagnetic cobalt particles

Speight, R. J. (Richard J.) and Wong, Alan and Ellis, P. and Hyde, T. and Bishop, P. T. and Smith, Mark E. (2009) A Co-59 NMR study to observe the effects of ball milling on small ferromagnetic cobalt particles. Solid State Nuclear Magnetic Resonance, 35 (2). pp. 67-73.

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Abstract

To demonstrate the potential of nuclear magnetic resonance (NMR) spectroscopy for investigating detailed structural properties in ferromagnetic materials, three different particle sized cobalt (Co) powders have been ball milled for 24 h are accurately characterised by internal-field Co-59 NMR. The Co-59 NMR spectra show distinct resonance bands corresponding to the different Co sites. face-centred-cubic (fcc), hexagonal-close-packed (hcp) and stacking faults (sfs), in Co metal powders. The hcp+fcc-->hcp phase transition encouraged by ball-milling was observed and quantitative values for each Co environment were obtained. (C) 2008 Elsevier Inc. All rights reserved.

Item Type: Article
Journal or Publication Title: Solid State Nuclear Magnetic Resonance
Uncontrolled Keywords: Co-59 NMR, Cobalt metal, Ball milling, Ferromagnet
Subjects:
Departments: VC's Office
ID Code: 52830
Deposited By: ep_importer_pure
Deposited On: 28 Feb 2012 13:15
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 23:09
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/52830

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