Tunneling magnetoresistance in granular cermet films with particle size distribution

The correlation between tunneling magnetoresistance (TMR) and field sensitivity (dMR/dH) for granular films (Co50Fe50)x-(Al2O3)1−x was studied. The position of TMR maximum is shifted towards the lower x in the higher applied magnetic fields. Such a behavior was observed for metal granular nanocompos...

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Bibliographic Details
Published in:	Journal of magnetism and magnetic materials Vol. 272-276; pp. E1403 - E1405
Main Authors:	Vovk, A.Ya, Golub, V.O., Malkinski, L., Kravets, A.F., Pogorily, A.M., Shypil’, O.V.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-05-2004
Subjects:	Granular systems Magnetoresistance Thin films Tunneling Thin films 75.70.Pa 75.50Tt 73.40.Gk Granular systems Tunneling 81.05Mh Magnetoresistance
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Summary:	The correlation between tunneling magnetoresistance (TMR) and field sensitivity (dMR/dH) for granular films (Co50Fe50)x-(Al2O3)1−x was studied. The position of TMR maximum is shifted towards the lower x in the higher applied magnetic fields. Such a behavior was observed for metal granular nanocomposites but is first reported for granular cermets. However the highest dMR/dH was found for the compositions just below the percolation threshold.
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2003.12.902