TRANSITION METAL-DOPED OXIDE SEMICONDUCTOR EXHIBITING ROOM-TEMPERATURE FERROMAGNETISM
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Sep 1, 2009
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Jul 30, 2004
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Abstract
An oxide semiconductor doped with a transition metal and exhibiting room-temperature ferromagnetism is disclosed. The transition metal-doped oxide semiconductor is preferably manufactured in powder form, and the transition metal is preferably evenly distributed throughout the oxide semiconductor. The preferred embodiments are iron-doped tin dioxide and cobalt-doped tin dioxide. Gases may be detected by passing them across a material and measuring the change in magnetic properties of the material; the preferred material is iron-doped tin dioxide.
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