High-frequency nanostructured magnetic materials for integrated inductors |
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Authors: | Paul McCloskey,Brice Jamieson,Terence O&rsquo Donnell,Donald Gardner,Michael A. Morris,Saibal Roy |
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Affiliation: | 1. Tyndall National Institute, Cork, Ireland;2. Intel Corporation, Santa Clara, USA;3. University College, Cork, Ireland |
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Abstract: | Electroplating is compatible with the deposition of relatively thick layers i.e. several μm to 10s- of μm. However eddy current losses mean that thick layers will have an inferior frequency response. We have used a low content phosphorous bath together with pulse reverse plating to generate Co-rich and Co-deficient multi-nanolayers of CoP having improved saturation magnetisation and a better frequency response. The plating parameters have been optimised in order to produce a material with low loss, and a high permeability of around 700 retained up to 103 MHz for a sample with a thickness of 1.7 μm and a resistivity of 136 μΩ cm. |
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Keywords: | 91.60.Pn 61.66.Dk |
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