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EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS
Volume 98, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/epjap/2022220256
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In this study, we investigated the effect of microstructure and In2O3/C interlayer thickness on the electrical transport properties of [(Co40Fe40B20)(34)(SiO2)(66)/(In2O3)/C](46) multilayers prepared via ion-beam sputtering. The results showed that all components of the multilayers were X-ray amorphous regardless of the layer thickness. The thinnest multilayer with a nonmagnetic In2O3/C interlayer thickness of about 1.6 nm exhibited a magnetoresistance of about 0.8% at room temperature and 3.2% at cryogenic temperature.
We investigated the role of microstructure and In2O3/C interlayer thickness on the electrical transport properties of [(Co40Fe40B20)(34)(SiO2)(66)/(In2O3)/C](46) multilayers prepared using ion-beam sputtering. These multilayers were characterized using an X-ray diffraction, X-ray reflectivity, impedance spectroscopy, and magnetoresistive measurements. The X-ray diffraction data showed that regardless of the layer thickness, all components of the multilayers are X-ray amorphous. Fitting X-ray reflectivity data, multilayer periodicities are extracted and layers thicknesses, densities and roughnesses are determined. Impedance spectroscopy has shown a resistive-capacitive coupling between electrically conductive ferromagnetic CoFeB clusters which corresponds to the model of a prepercolation composite. For the thinnest multilayer with nonmagnetic In2O3/C interlayer thickness of about 1.6 nm, we managed to achieve a magnetoresistance of about 0.8% at room temperature and 3.2% at cryogenic temperature.
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