Materials science

Magnetism

Physics

Condensed matter physics

Zenodo (CERN European Organization for Nuclear Research)

&amp;lt;p&amp;gt;Carbon encapsulated iron-cementite Fe&amp;ndash;Fe3C nanoparticles with &amp;lsquo;&amp;lsquo;core&amp;ndash;shell&amp;rsquo;&amp;rsquo; architecture, were synthesized by a single-step solid-state pyrolysis of iron phthalocyanine at the temperature 900 ◦C with pyrolysis time of 180 min. The morphology and size distribution of the fabricated nanocomposites have been investigated using high resolution transmission and scanning transmission electron microscopies which revealed Fe&amp;ndash;Fe3C nanoparticles with an average diameter of about 7.5 nm embedded in a carbon matrix. The structure, composition, and morphology of Fe&amp;ndash;Fe3C nanoparticles in the carbon matrix were analyzed by X-ray based techniques combined with Reactive Force-Field Molecular Dynamics simulations, M&amp;ouml;ssbauer spectroscopy to outline the &amp;lsquo;&amp;lsquo;core&amp;ndash;shell&amp;rsquo;&amp;rsquo; architecture. Such evidence is further supported by the magnetic features of hysteresis loops at 10 and 300 K as well as the magnetization of Fe&amp;ndash;Fe3C nanoparticles is properly approximated with magnetic contributions of Fe and Fe3C bulk counterparts.&amp;lt;/p&amp;gt;

Journal of Magnetism and Magnetic Materials