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(a) Cross-sectional HRTEM image of Fe (30 nm)/[Mg (1.04 nm)/Al(1.16 nm)]-/Fe(5 nm) structure along  direction of Fe layers with dislocation circled. (b) Nanoelectron beam diffraction pattern for (MgAl)- barrier. Dashed squares indicate nearest diffraction spots of spinel structure. (c) Two-dimensional lattice model of epitaxial relationship between Fe and spinel (001) layers. (d) Schematic illustration of spinel structure.
TMR (open circles) and RA (filled squares) for MTJs as a function of . All measurements were carried out at RT.
(a) Temperature dependence of TMR (solid line) and RA (dashed lines) for MTJ with of 0.91 nm. (b) Resistance-magnetic field curves measured at 15 and 298 K.
Bias voltage dependence of normalized TMR ratio for MTJ with of 0.91 nm measured at RT.
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