We demonstrate high-quality epitaxial growth of Heusler alloy Co 2 FeSi on Ge(111) by molecular beam epitaxy (MBE) at 200 °C. Even for growth at such a low temperature, L 21-ordered crystal structure is formed and highly uniform magnetic environments around the Fe sites are realized, by transmission electron diffraction and conversion electron Mössbauer spectroscopy, respectively. We also find that the magnetic moment reaches 5.37 μB/f.u., which is the highest value in thin-film Co2 FeSi samples reported.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)