Magnetic mirror effect

The use of the magnetic mirror effect as a magnetic lens shield has also been suggested. By shielding various parts of the electron microscope, the resolving power could conceivably be increased so that individual atoms in a material could be seen [11]. 

Figure 39 (a) Schematic representation of an experimental setup for measuring of three-dimensional anisotropy of the magnetic field effect on photoconductivity (C—crystal, M—mirror), (b) Orientation of the magnetic field B with respect to the crystal axes (a, b, c ). From Ref. 248. 

Figure 5.7.7 shows a typical MR curve for our spin-valve material. Because it contains only two active magnetic layers, the effect is much smaller than that in GMR multilayers, but the slope at zero field is much steeper and so is the sensitivity of the device. To increase the magnitude of the effect, the whole stack can be doubled or mirrored (dual spin valve) and reflecting nano-oxide layers (NOL) can be included. These act as mirrors for the conduction electrons, which are specularly reflected (spin conservative) back into the magnetic layer. With these measures, effects of greater than 20% can be obtained [30]. 

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