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Magnetite Fe<sub>2</sub>O<sub>3</sub> whiskers are synthesized by thermal oxidation of a stainless steel substrate and identified as a single crystal extending in <110> direction by transmission electron microscopy. Field emission microscope (FEM) equipped with Mott polarization analyzer under pressure of 2times10-8 Pa are carried out to confirm the origin of Verwey transition...
In this study, a spin-polarized electron source which can operate at room temperature is reported. <110>-oriented single crystal magnetite whiskers 30 to 200 nm in diameter were synthesized on a stainless steel plate by the combustion flame thermal oxidation process. Microscopic analyses revealed that the whiskers have some defects such as stacking faults and dislocations and also that manganese...
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