Hierarchical inverted/normal cobalt ferrite nano-chessboard
AssigneeMorgan State University
InventorAbdellah Lisfi
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Abstract
A cobalt ferrite film consisting of twinned cobalt ferrite isomer crystals, metastable normal Co2+tet[Fe3+oct]2O4 isomer [nCFO] and tetragonal inverted Fe3+tet[Co2+Fe3+]octO4 isomer [iCFO], the nCFO and iCFO isomer crystals alternating in chessboard fashion in three dimensions, the cobalt ferrite film made by pulsed laser deposition in a vacuum chamber from a polycrystalline CoFe2O4 target on a single crystal one-side polished MgO substrate preferably heated to a temperature of greater than about 600° C.
Claims6
A cobalt ferrite film comprising twinned cobalt ferrite isomer crystals wherein the twinned cobalt ferrite isomers are metastable normal Co2+tet[Fe3+oct]2O4 isomer [nCFO] and tetragonal inverted Fe3+tet[Co2+Fe3+]octO4 isomer [iCFO], wherein said cobalt ferrite film comprises a plurality of layers, and said nCFO and iCFO isomer crystals alternate in chessboard fashion in three dimensions.
A method of manufacturing a cobalt ferrite film comprising pulsed laser deposition in a vacuum chamber from a polycrystalline CoFe2O4 target on a single crystal one-side polished MgO substrate heated to a temperature of greater than about 600° C.
Dependencies are inferred from the claim text.