Preparation of 0.7Pb(Mg_1/3Nb_2/3)O₃-0.3PbTiO₃ Thin Films Via a Polyvinylpyrrolidone-Assisted Aqueous Sol-Gel Process and Dielectric Properties

Authors: Nakagauchi, Ryo; Kozuka, Hiromitsu

Source: Journal of the American Ceramic Society, Volume 90, Number 11, November 2007 , pp. 3632-3634(3)

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Abstract:

Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ (PMN-PT) thin films were prepared by spin coating using aqueous solutions of metal salts containing polyvinylpyrrolidone, where niobium oxide layers and lead—magnesium-titanium oxide layers were laminated on Pt(111)/TiO_x/SiO₂/Si(100) substrates and fired at 750° or 800°C. 250 ± 20 nm thick 0.7PMN-0.3PT thin films of a single-phase perovskite could be prepared, and the film fired at 750°C had dielectric constants and dielectric loss of 1900 ± 350 and 0.13 ± 0.03, respectively, exhibiting polarization-electric field hysteresis with a remanent polarization of 5.1 μC/cm² and a coercive field of 21 kV/cm.

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2007.01910.x

Affiliations: 1: Department of Materials Science and Engineering, Kansai University, Suita, 564-8680, Japan

Publication date: 2007-11-01