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Fabrication of iron oxide pattern

TLDR
Patterned iron oxide films are produced on substrates by oxidative decomposition of polyvinyl ferrocene as mentioned in this paper, where the polymer may be applied to the substrate in the form of a solution by spinning.
Abstract
Patterned iron oxide films are produced on substrates by oxidative decomposition of polyvinyl ferrocene. The polymer may be applied to the substrate in the form of a solution by spinning. Resultant films may be relatively soluble or relatively insoluble in acidic media depending upon processing conditions. Soluble films are of interest for hard copy masks designed for use in the fabrication of printed circuits. Such masks may be pattern-delineated by photoresist techniques or by selective insolubilization. Alternatively, patterns may result from selective deposition or removal of the polymer prior to decomposition.

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Pattern delineation method and product so produced

TL;DR: In this paper, a process for the fabrication of a supported iron oxide pattern involves electromagnetic wave irradiation of a blank, which results in insolubilization so that delineation is accomplished by immersing the processed blank in a suitable solvent.
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