Abstract
Epitaxial multilayers and superlattices of Ba0.8Sr0.2TiO3 and Ba0.4Sr0.6TiO3 were grown by pulsed laser deposition on MgO substrates using a La0.5Sr0.5CoO3 bottom electrode. The epitaxial relations, crystal perfection, and strains were studied by x-ray diffraction at room temperature. Pseudomorphic growth of superlattices was demonstrated for the period as large as 62unit cells. The obtained in-plane strain was consistent with that theoretically expected. Low-frequency functionality was found to depend on strain, period, and amount and quality of interfaces.
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