Deposition of thin films of multicomponent materials

Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering

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20419218, 20419215, C23C 1434

Patent

active

051961016

ABSTRACT:
Composite films of multicomponent materials, such as oxides and nitrides, e.g., lead zirconate titanate, are deposited by dc magnetron sputtering, employing a rotating substrate holder, which rotates relative to a plurality of targets, one target for each metal element of the multicomponent material. The sputtering is carried out in a reactive atmosphere. The substrates on which the layers are deposited are at ambient temperature. Following deposition of the composite film, the film is heated to a temperature sufficient to initiate a solid state reaction and form the final product, which is substantially single phase and substantially homogeneous.

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Screenivas et al., "Charaterization . . . targets", J. Appl. Phys. 64(3), Aug. 1988, pp. 1484-1493.

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