Influence of hydrogenation on magnetoresonance characteristics of nanocomposite (CoFeB)mC100-m films

Sergei Vyzulin,Alexandr Kevraletin,Nikolaj Syr’Ev

doi:10.1051/epjconf/201818504003

Abstract

The influence of hydrogenation on the magnetoresonance characteristics of nanocomposite films during synthesis is studied by the method of ferromagnetic resonance (FMR). It is shown that introduction of hydrogen into the working chamber during the synthesis of film nanogranular structures (CoFeB)mC100-m leads to a change in a resonant field, to increase of the absorption line width, to reduction of anisotropy field in the film plane.

Highlights

Granular nanocomposite films, comprising magnetic and nonmagnetic phase, are promising functional materials for such varied practical applications as spintronic, single-electron electronics and so on [1].Properties of nanocomposite films are under intensive research
The spectra were measured for each sample under differently oriented magnetization field H relative to the film plane, from α=0 to α=90°, where n – is the vector normal to the film plane
The form of the observed ferromagnetic resonance (FMR) spectra, the quantitative composition of the absorption lines and value of Hr are significantly dependent on the magnetic phase concentration m and the orientation of the external magnetic field relative the normal to the film plane

Summary

Introduction

Granular nanocomposite films, comprising magnetic and nonmagnetic phase, are promising functional materials for such varied practical applications as spintronic, single-electron electronics and so on [1]. Properties of nanocomposite films are under intensive research. The interest of researchers is associated with metal nanoparticles having the unique magnetic properties. The magnetic properties of nanoparticles are determined by many factors. One of these factors is the size and shape of nanoparticles. Changing the size and shape of nanoparticles, it is possible, within certain limits, to manage the magnetic properties of materials, based on them [2,3]. It is possible to change the size and shape of nanoparticles in the composites synthesis process. The effect of hydrogen during the synthesis to form carbon nanostructures was shown [4]

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Conclusion