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Abstract:
We report on the investigation of morphology, magnetic and conductive
properties of the mutilayered nanostructures
[(Co40Fe40B20)(34)(SiO2)(66)]/[C](47) consisting of the contacting
magnetic (Co Fe-40 (40) B (20)) (34)(SiO2)(66) nanocomposite and
amorphous semiconductor carbon C layers. It is shown by
Grazing-Incidence Small-Angle X-ray Scattering method that the ordering
and the size of nanoparticles in the magnetic layers do not change
profoundly with increasing of carbon layer thickness. Meanwhile, the
electrical conductance and the magnetic properties are significantly
varied: resistance of the samples changes by four orders of magnitude
and superparamagnetic blocking temperature changes from 15 K to 7 K with
the increment of carbon layer thickness h(c) from 0.4 nm to 1.8 nm. We
assume that the formation of the homogeneous semiconductor interlayer
leads to modification of the metal-insulator growth process that drives
the changes in the magnetic and conductive properties. (C) 2015 Elsevier
B.V. All rights reserved.
