Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
67 (1990), S. 569-571
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Fe2O3 film (∼110 A(ring)) on crystalline Al2O3 substrate is treated by ruby laser pulses at different energy densities up to a maximum of ∼7.5 J/cm2, and the transformations are examined by conversion electron Mössbauer spectroscopy and small-angle x-ray diffraction measurements. It is observed that transformations begin to appear in the sample at an energy density of ∼3.0 J/cm2 although significant modifications are observed only at energy densities higher than about 7.0 J/cm2. The values of hyperfine interaction parameters reveal that the laser treated samples contain FeAlO3 and FeAl2O4 phases, along with the residual α-Fe2O3 phase. The laser-mixed state undergoes structural modifications upon thermal annealing, leading to formation of the Fe3O4 phase and complete disappearance of the FeAlO3 phase.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.345195
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