Depositing thin films is often limited to a specific deposition process by which precursors are transported in a deposition environment. In other words, a deposition environment in which two deposition processes complementary to each other are unified may offer new insights in designing thin film structures. This view motivated us to combine atomic layer deposition (ALD) and magnetron sputtering (SPU) in a single chamber – sputtering atomic layer augmented deposition (SALAD). The SALAD system offers benefits of consistently delivering precursors in ALD and freely choosing chemical elements in SPU. In this paper, the SALAD system is employed to deposit nanocomposites consisting of multiple layers of aluminum oxide deposited by ALD and copper layers deposited by SPU. Distinctive dispersion features seen in optical properties of the nanocomposites are analyzed to reveal the interrelationship between structural properties and electronic properties of the nanocomposites.
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