MBE growth of Mn-doped ZnSnAs2 thin films

Growth and characterization of Ga doped ZnSnAs2 thin films on InP substrates

“…Very recently, we revealed that ZnSnAs 2 grown epitaxially films on substrate with an orientation relationship with respect to the substrate as (001) ZnSnAs 2 ∥(001) InP and [100] ZnSnAs 2 ∥[100] InP [5] and lightly Mn-doped ZnSnAs 2 and ~4% Mn-doped ZnSnAs 2 epitaxially thin films show room temperature ferromagnetism [6,7]. This result makes us develop an integration with future InPbased optoelectronic devices with function of spin polarization.…”

Ferromagnetic and transport properties of p‐type (Zn,Mn,Sn)As2thin films grown on InP substrates for various Mn contents

“…More recently, ternary ferromagnetic II-IV-V 2 compounds crystallizing in the chalcopyrite structure are of special interest for potential applications in spintronic devices, owing to their roomtemperature ferromagnetism [4][5][6]. Among the II-IV-V 2 chalcopyrites, we have proposed a Mn-doped ZnSnAs 2 thin film showing ferromagnetism at room temperature as a ferromagnetic building block in InP-based spintronics [7][8][9]. ZnSnAs 2 is a member of the II-IV-V 2 pnictide semiconductors, these kinds of thin films are known to crystallize into either chalcopyrite or sphalerite structures depending on the growth conditions [10].…”

“…In-situ reflection high-energy electron diffraction (RHEED) was used to monitor the film quality during the growth. Details of the growth process have been described elsewhere [8,11]. The crystalline structure of the grown films was characterized using high-resolution X-ray diffraction (HR-XRD), and superconducting quantum interference device (SQUID) magnetometry was used to investigate the magnetic properties of the Mn-doped ZnSnAs 2 thin films.…”

XAFS studies of diluted magnetic semiconductor Mn-doped ZnSnAs2thin films on InP substrates

“…As the alternative ferromagnetic semiconductors, II-IV-V 2 chalcopyrite semiconductors such as CdGeP 2 [5], CdGeAs 2 [6] and ZnSnAs 2 [7][8] have been shown to become ferromagnetic by Mn doping, and have Curie temperatures higher than 300 K. A bulk-type ZnSnAs 2 crystal doped with Mn has been experimentally shown to be ferromagnetic at a high Curie temperature [7]. The magnetic ion Mn, which occupies the cation IV site in host chalcopyrite or zinc-blende (sphalerite) structures, has a local spin and at the same time acts as an acceptor.…”

“…The magnetic ion Mn, which occupies the cation IV site in host chalcopyrite or zinc-blende (sphalerite) structures, has a local spin and at the same time acts as an acceptor. Very recently, ZnSnAs 2 :Mn thin films have been epitaxially grown on InP (001) without any secondary phases, and have shown room-temperature ferromagnetism [8][9][10]. Both experimentally and theoretically, ZnSnAs 2 is probably regarded as a "vertical GaAs" to some extent, consisting of two interposing zincblende lattices, while permitting a high degree of Mn incorporation because Mn 2+ ions may easily substitute on the group II Zn sites.…”