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Thin films (0.12μm) of hematite (α-Fe 2 O 3 ) were prepared on Si(111) and Si(100) substrates by hydrothermal treatment of a solution of iron nitrate containing urea in the temperature range of 100-200°C for 4 - 24h. The films consisted of spherical grains for Si (111) and columnar grains for Si(100) with a typical grain size 10nm and 30nm 5nm, respectively. Both films deposited...
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