Effects of barrier layers on the electrical properties of (Pb,La)(Zr,Ti)O3 films on nickel foils

Processing Technologies for High‐Permittivity Thin Films in Capacitor Applications

“…In spite of the lack of increase in overall capacitance density, the addition of a ZrO 2 buffer layer did allow for decreased leakage currents and improved reliability, 26 which are certainly important for a manufacturable process. An alternative to insulating buffer layers is the inclusion of conducting oxide layers such as LaNiO 3 , 27,31–33 (La,Sr)MnO 3 , 28 or RuO x 31 . Use of solution‐deposited LaNiO 3 layers on stainless steel, titanium, and nickel substrates resulted in a doubling of the permittivity to >400 and a decrease in loss tangent, both of which could be attributed to a reduction in interdiffusion between PZT films and substrates as well as a reduction in substrate interfacial oxidation 27 .…”

“…Use of solution‐deposited LaNiO 3 layers on stainless steel, titanium, and nickel substrates resulted in a doubling of the permittivity to >400 and a decrease in loss tangent, both of which could be attributed to a reduction in interdiffusion between PZT films and substrates as well as a reduction in substrate interfacial oxidation 27 . In a direct comparison of PLZT films deposited on nickel substrates with and without a conductive barrier layer, Kim 31 credited a substantial increase in permittivity with peak values at room temperature exceeding 1000 when using Ru/RuO x oxide buffer layers to reduced interdiffusion between substrate and film and minimal nickel substrate oxidation. (La,Sr)MnO 3 buffer layers on titanium foil substrates revealed a similar effect to LaNiO 3 buffers on nickel substrates 28 .…”

Construction of a Pliable Electrode System for Effective Electrochemical Oxygen Evolution Reaction: Direct Growth of Nickel/Iron/Selenide Nanohybrids on Nickel Foil

“…29,30 Commercially available nickel foil has been widely used as a substrate for the growth of nanomaterials, such as nanowires, 62 Co 3 O 4 nanorods, 63 carbon nanofibers, 64 and (Pb 0.92 La 0.08 )-(Zr 0.52 Ti 0.48 )O 3 (PLZT) films. 65 More importantly, when used as a substrate material for electrode systems, the mechanical features of the thin foil can improve engineering availability. The nickel foil used in the current work has a thickness of 0.125 mm (99.9+%), and its shape can be easily manipulated.…”