Synthesis of Ultrasmall Ferromagnetic Face‐Centered Tetragonal FePt–Graphite Core–Shell Nanocrystals

A graphite coat: Ultrasmall L10-ordered face-centered tetragonal FePt–graphite shell nanocrystals were synthesized by a simple one-step CVD process. Particles with sizes between 1 and 3 nm were readily obtained by varying the amount of metal precursors loaded on a silica support. FePt–graphite shell nanocrystals with mean diameter ≈2.8 nm (see picture) exhibit ferromagnetism with relatively high coercivity at room temperature and superior chemical stability against etching and oxidation. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.