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DE2004822368

Publication Date	2003
Personal Author	Sorescu, M.
Page Count	22
Abstract	Nanostructured magnetite/T multilayers, with T = Ni, Co, Cr, have been prepared by pulsed laser deposition. The thickness of individual magnetite and metal layers takes values in the range of 5 - 40 nm with a total multilayer thickness of 100 -120 nm. X-ray diffraction has been used to study the phase characteristics as a function of thermal treatment up to 550 degrees C. Small amounts of maghemite and hematite were identified together with prevailing magnetite phase after treatments at different temperatures. The mean grain size of magnetite phase increases with temperature from 12 nm at room temperature to 54 nm at 550 degrees C. The thermal behavior of magnetite in multilayers in comparison with powder magnetite is discussed. These findings were published in peer-reviewed conference proceedings after presentation at an international materials conference.
Keywords	Pulsed laser deposition Multilayer structures Magnetic materials Heat treatment Magnetite Annealing Hematite Thermal analysis X-ray diffraction Nickel Chromium Cobalt
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Duquesne Univ., Pittsburgh, PA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200506

Pulsed Laser Deposition of Magnetic Multilayers for the Grant Entitled Laser Processing of Advanced Magnetic Materials.

Pulsed Laser Deposition of Magnetic Multilayers for the Grant Entitled Laser Processing of Advanced Magnetic Materials.
DE2004822368

Publication Date	2003
Personal Author	Sorescu, M.
Page Count	22
Abstract	Nanostructured magnetite/T multilayers, with T = Ni, Co, Cr, have been prepared by pulsed laser deposition. The thickness of individual magnetite and metal layers takes values in the range of 5 - 40 nm with a total multilayer thickness of 100 -120 nm. X-ray diffraction has been used to study the phase characteristics as a function of thermal treatment up to 550 degrees C. Small amounts of maghemite and hematite were identified together with prevailing magnetite phase after treatments at different temperatures. The mean grain size of magnetite phase increases with temperature from 12 nm at room temperature to 54 nm at 550 degrees C. The thermal behavior of magnetite in multilayers in comparison with powder magnetite is discussed. These findings were published in peer-reviewed conference proceedings after presentation at an international materials conference.
Keywords	Pulsed laser deposition Multilayer structures Magnetic materials Heat treatment Magnetite Annealing Hematite Thermal analysis X-ray diffraction Nickel Chromium Cobalt
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Duquesne Univ., Pittsburgh, PA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200506