Tailoring Fe/Ag Superparamagnetic Composites by Multilayer Deposition
J. Balogh, D. Kapt\'as, L. F. Kiss, and T. Pusztai, E. Szil\'agyi and, \'A. Tunyogi, J. Swerts, S. Vandezande, K. Temst, C. Van Haesendonck
TL;DR
This study investigates how the magnetic properties of Fe/Ag multilayers can be controlled by adjusting layer thicknesses, revealing superparamagnetic behavior and magnetic interactions in heterostructures.
Contribution
It introduces a detailed analysis of magnetic interactions in Fe/Ag multilayers and demonstrates how to tailor superparamagnetic properties through multilayer deposition.
Findings
Superparamagnetic behavior observed in 0.2 nm Fe layers
Magnetic properties can be tailored by layer thickness
Identification of ferromagnetic contribution to low field susceptibility
Abstract
The magnetic properties of Fe/Ag granular multilayers were examined by SQUID magnetization and Mossbauer spectroscopy measurements. Very thin (0.2 nm) discontinuous Fe layers show superparamagnetic properties that can be tailored by the thickness of both the magnetic and the spacer layers. The role of magnetic interactions was studied in novel heterostructures of superparamagnetic and ferromagnetic layers and the specific contribution of the ferromagnetic layers to the low field magnetic susceptibility was identified.
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