TITLE

Cation-disorder-enhanced magnetization in pulsed-laser-deposited CuFe2O4 films

AUTHOR(S)
Yang, Aria; Chen, Z.; Zuo, Xu; Arena, Dario; Kirkland, J.; Vittoria, C.; Harris, V. G.
PUB. DATE
June 2005
SOURCE
Applied Physics Letters;6/20/2005, Vol. 86 Issue 25, p252510
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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 °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 δ [defined as (Cu1-δFeδ)tet[CuδFe2-δ]octO4] decreases monotonically from 0.72 to 0.55 with increasing saturation magnetization.
ACCESSION #
17636558

 

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