Journal
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
Volume 42, Issue 3, Pages 381-387Publisher
SPRINGER
DOI: 10.1007/s10971-006-0200-z
Keywords
orientation control; epitaxial; perovskite; nanosheet; exfoliation; delamination; LaNiO3; PZT; KCa2Nb3O10; ferroelectric
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Orientation control of perovskite compounds was investigated by the application of a seed layer prepared from oxide nanosheets. An aqueous suspension of oxide nanosheets was prepared by the exfoliation of a layered compound of KCa2Nb3O10 oxide grains. A seed layer composed of (TBA)Ca2Nb3O10 nanosheets (TBA = tetrabutylammonium) was formed on a glass substrate by simply dip coating it in the suspension. Two kinds of perovskite compounds, LaNiO3 (LNO) and Pb(Zr,Ti)O-3 (PZT) with a preferred orientation of (00l) were successfully grown on this seeded glass substrate. In this study, the relation between lattice mismatch and electrical properties is investigated. A large, oriented PZT film with a size of 5 x 4 cm shows an improved P-E hysteresis behavior by use of this orientation control.
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