Spintronics AdvancesControlling Magnetization Direction of Magnetite at Room Temperature

lithium ions flow through the reduction–oxidation transistor
Figure 1. After applying an external voltage, lithium ions flow through the reduction–oxidation transistor and reach the bottom magnetite film, altering its charge carrier concentration and modifying the orientation of Fe spins.
Figure 2. The change in magnetization angle become noticeable under external voltages higher than 0.7 V.
Figure 2. The change in magnetization angle become noticeable under external voltages higher than 0.7 V, yielding a reversible change of about 10°. At voltages higher than 1.2 V, the rotation is more pronounced but becomes irreversible due to permanent structural changes in the magnetite phase.

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Tokyo University of Science

Tokyo University of Science

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Tokyo University of Science (TUS) is one of the most well-known, respected, and the largest science-specialized private research universities in Japan.