Growth and magnetic properties of Mn‐doped ZnSiAs₂/Si heterostructures

Abstract

Mn‐doped ZnSiAs2/Si heterostructures were grown by vacuum‐thermal deposition of ZnAs2 and Mn layers on Si substrates followed by annealing. The surface contained a ZnSiAs2 film, but also micro‐crystals with a composition close to ZnAs2 or ZnSiAs2‐Si‐SiAs eutectic. The temperature and field dependencies of the magnetization were measured. Two types of magnetic phases were detected: a paramagnetic one with the mean magnetic moment of 7.6 Bohr magnetons, formed by Mn2+ ions, and a ferromagnetic one with Curie temperature 340 K in 50 kOe magnetic field, formed by MnAs clusters. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Making Ferromagnetic Heterostructures Si/Zn_(1-X)Mn_XSiAs₂ and Ge/Zn_(1-X)Mn_XGeAs₂

“…These data prove our scheme of interaction. The heterostructures ferromagnetic/semiconductor ZnSiAs 2 <Mn>/Si were [6] according the diagram of phases [4]. The magnetic properties of heterostructures were close to the magnetic properties of bulk crystals [7].…”