Effect of thickness on some phusical propertiso of α -Fe 2O3 thin films perpared by PLD

Abstract EN

The effect of thickness variation on some physical properties of hematite α-Fe2O3 thin films was investigated.

An Fe2O3 bulk in the form of pellet was prepared by cold pressing of Fe2O3 powder with subsequent sintering at 800 .

Thin films with various thicknesses were obtained on glass substrates by pulsed laser deposition technique.

The films properties were characterized by XRD, and FT-IR.

The deposited iron oxide thin films showed a single hematite phase with polycrystalline rhombohedral crystal structure .The thickness of films were estimated by using spectrometer to be (185-232) nm.

Using Debye Scherrerś formula, the average grain size for the samples was found to be (18-32) nm.

Atomic force microscopy indicated that the films had smooth surfaces, with a lateral grain shape.

The optical absorption of the films was determined from spectrophotometric measurements.