Transport properties in magnetic tunnel junctions (MTJs) with Co2 Fex Mn1-x Si (CFMS, x=0-1.0) /Al-O/ Co75 Fe25 structure and Gilbert damping constant in the epitaxial CFMS films were investigated. The tunnel magnetoresistance ratio is as high as 75% in MTJs with x=0.6 at room temperature. The Gilbert damping constant is minimal at x=0.4. Relations between half-metallicity and the Gilbert damping constant in CFMS films were examined, revealing that the damping constant is small in half-metallic CFMS films.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)