Abstract
The dilute magnetic semiconductor (DMS) materials have important application prospects in the field of electronic science and technology. Ca2Ge is a new environmentally friendly semiconductor material. The structure characteristics indicate that the dilute magnetic properties can be achieved by doping, in the theory. There are CI, CII, CIII, OI, OII and OIII six doped types by Mn doping. For the CI, CII and OIII, Ca2Ge is a semiconductor with a band gap of 0.21 eV, 0.21 eV and 0.065 eV, respectively; For the OII, Ca2Ge turns into a semi-metallic; For the CIII and OI, Ca2Ge turns into a metal. Ca2Ge trans into ferromagnetism with Mn doped, the molecular magnetic moments of CI, CII, CIII, OI, OII and OIII are 5 μB, 5 μB, 1 μB, 5 μB, 5 μB and 7 μB, respectively. The results of the projected density of states (PDOS) indicated that the magnetism mainly comes from the Mn 3d orbital spin, the orbital population shows that the spin of Mn atom affects the spin of Ca atom and the spin of Ge atom, the magnetic moment that is excited by Mn atom doping.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
