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Title
Japanese: 
English:Reorientation Response of Magnetic Microspheres Attached to Gold Electrodes Under an Applied Magnetic Field 
Author
Japanese: De Los Santos Valladares Luis, Bustamante Dominguez A., Albino Aguiar J., Reeve R. M, Mitrelias Thanos, Langford R. M., 東 康男, H.W. Barnes Crispin, 真島 豊.  
English: Luis De Los Santos Valladares, A. Bustamante Dominguez, J. Albino Aguiar, R. M. Reeve, Thanos Mitrelias, R. M. Langford, Yasuo Azuma, Crispin H.W. Barnes, YUTAKA MAJIMA.  
Language English 
Journal/Book name
Japanese: 
English:Brazilian Journal of Physics 
Volume, Number, Page Vol. 43    Number 4    Page 209-213
Published date May 24, 2013 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1007/s13538-013-0133-2
Abstract In this work, we report the mechanical reorientationof thiolated ferromagnetic microspheres bridging a pairof gold electrodes under an external magnetic field. Whenan external magnetic field (7 kG) is applied during themeasurement of the current–voltage characteristics of a carboxylferromagnetic microsphere (4 μm diameter) attachedto two gold electrodes by self-assembled monolayers(SAMs) of octane dithiol (C8H18S2), the current signal isdistorted. Rather than due to magnetoresistance, this effectis caused by a mechanical reorientation of the ferromagneticsphere, which alters the number of SAMs between thesphere and the electrodes and therefore affects conduction.To study the physical reorientation of the ferromagneticparticles, we measure their hysteresis loops while suspendedin a liquid solution.Keywords Magnetic microparticles

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