Abstract
This letter describes the phenomenon that takes place between nickel/barium titanate couples when heated under conditions employed in multilayer ceramic capacitor manufacturing practice: a 4 h, 1300 °C isothermal anneal in 1% H 2 –99% N 2 . Dense, sputtered nickel films were observed to dewet the titanate and agglomerate into discrete or interconnected islands via a solid-state process. Up to a critical film thickness value of ∼ 1.4 μm, the degree of agglomeration was found to display an exponential dependence on the thickness of the original nickel film.
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