Diluted magnetic semiconductors (DMSs) are pivotal architectural elements in many proposed spintronics devices. In particular, wide band gap DMSs are being intensely investigated for their potential use in high-temperature spintronics technologies. This talk will summarize our group's recent findings related to: (a) Direct chemical synthesis and magneto-optical spectroscopy of DMS nanostructures (b) Chemical manipulation of room-temperature spin ordering in oxide DMSs (c) Charge transfer electronic structures of oxide DMSs (d) Spin generation and manipulation in collidal DMS nanostructures. Apart from the technological advantages of reliable, controllable, and even switchable high-Tc ferromagnetic semiconductors, this research is motivated by the new fundamental insights it provides into the microscopic origins of ferromagnetism in this class of materials.

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