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Abstract: Optimal parameters for depositing titanium nitride (TiN) thin films by DC reactive magnetron sputtering were determined. TiN thin films were deposited on Si (100) substrates by DC reactive magnetron sputtering, at different temperatures, different electrical current values, and different N₂/Ar ratios. Structural characteristics of TiN thin films were measured by X-ray diffraction (XRD); surface morphology of the thin films was characterized using an atomic force microscope (AFM). The electric resistivity of the TiN films was measured by a four-point probe. In the result, temperature is 500 °C, electrical current value is 1.6 A, pure N₂ is the reacting gas, TiN thin film has the preferred (200) orientation, resistance is small enough for its use as bottom electrodes.

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