IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Magnetism in powder and film doped oxide dilute magnettic semiconductors. Facts and questions.
Autor/es:
F.H. SÁNCHEZ
Lugar:
Buenos Aires
Reunión:
Simposio; International Symposium on Metastable, Amorphous and Nanostructured Materials; 2008
Institución organizadora:
UBA-CONICET-CIDIDI
Resumen:
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A variety of doped-semiconducting materials, called diluted magnetic
semiconductors (DMS) combine two properties: semiconductivity and ferromagnetism.
DMS that retain their magnetism at and above RT are critically important in the
development of spintronics as spin injectors for heterostructures that can
operate without cryogenic cooling. Diluted magnetic semiconducting oxides (O-DMS)
are among the most promising materials of this kind and have posed interesting
new problems in magnetism.
We present results on DM-SnO2 (a wide
band gap transparent semiconductor) prepared in the form of powders and films
by mechanosynthesis and laser ablation deposition. The magnetic structure of
Fe-doped powders is analyzed, and the reliability on reported magnetism in pure SnO2 films is
discussed.