Thin La2Zr2O7 films made from a water-based solution |
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Authors: | V Cloet J Feys S Hoste |
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Institution: | a Ghent University, Krijgslaan 281-S3, 9000 Gent, Belgium b Institute for Metallic Materials, IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany |
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Abstract: | Thin films of La2Zr2O7 (LZO) are highly regarded as possible buffer layers in the coated conductor configuration. This report describes a new synthesis for thin crystalline LZO films, based on a largely water-based solution, mainly containing metal acetates, acetic acid and an organic amine-base: triethanolamine. Initially, a thin layer of amorphous material is deposited on the textured Ni-5 at%W substrate by means of dip-coating. Only by careful control of the thermal treatment can the layer be transformed into a crystalline layer. Important parameters in this respect are the heating rate and the dwell time. The amorphous gel is analysed by HR-TGA/DTA and HR-TEM. The textured layers are analysed by XRD, pole figures, RHEED, AFM and SEM. |
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Keywords: | Coated conductor Sol-gel La2Zr2O7 films Dip-coating |
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