Journal
APPLIED PHYSICS LETTERS
Volume 86, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1952571
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Copper ferrite films have been deposited on (100) MgO substrates by pulsed-laser deposition. The oxygen pressure used in deposition was varied from 1 to 120 mTorr with the substrate temperature fixed at 700 degrees C. Magnetization values are measured to increase with oxygen pressure, reaching a maximum value of 2480 G, which is a 42% increase over the bulk equilibrium value. Extended x-ray absorption spectroscopy shows that the Cu cation inversion delta [defined as (Cu1-delta Fe delta)(tet)[Cu delta Fe2-delta]O-oct(4)] decreases monotonically from 0.72 to 0.55 with increasing saturation magnetization. (c) 2005 American Institute of Physics.
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