Date: Friday, May 18, 2012
Time: 16:00 - 17:00
Place: 8th floor small seminar room (Room 811)
Recent report of large MR ratio over 70% at RT using a Co2Fe0.4Mn0.6Si-based current-perpendicular-to-plane giant magnetoresistance (CPP-GMR)
devices by Sato et al. indicates great potential of half-metallic Heusler-based
CPP-GMR devices. However, there is no systematic studies on the effect
of the replacement of Mn by Fe on the MR enhancement. In this seminar,
we will report our recent systematic studies on the MR properties of CPP-GMR
using Co2Fe1-xMnxSi (CFMS) Heuser alloys. Spin-torque induced oscillation based on the CFMS-based
CPP-GMR will be also presented.