Rectangular VTFLEX magnetron

With unlimited flexibility for tuning uniformity of sputtered layers to the sub 1% range, the Gencoa VTF is the latest addition to the VTech range of products, which offer easy and precise film uniformity adjustments.

Gencoa's VTFLEX magnetrons have the ability to tune the magnetic field strength independently on small segments down both sides of the plasma racetrack. The different segments are adjusted by a manual digital locator that increases or reduces the field strength in the local region. The segments can be retracted or tilted in either direction, which allows smooth or 'sharp' changes in field strength over the racetrack.

The ability to adjust the field strength will result in changes to the plasma density and therefore the amount of material sputtered onto the substrate. As the possible changes in strength are wide-ranging, the VTF magnetrons can be used to correct for uniformity at the end of an in-line system or as an independent source to offer much better uniformity than standard.

The total flexibility allows uniformities of less than 1% to be achieved with relative ease. Adjustments can also be made during the process to correct shifts in uniformity with time.

The VTF magnetrons are particularly useful where high uniformity from large area RF sputtering processes are required. The more common DC and MF type power modes can likelise be adjusted to achieve the higher uniformity demanded of certain products.

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Comparison of varying scan resultsGencoa rectangular VTFLEX magnetronRectangular VTFLEXRectangular VTFLEXGencoa rectangular VTFLEX magnetron

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