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Preparation of 0.7Pb(Mg 1/3 Nb 2/3 )O 3 –0.3PbTiO 3 Thin Films Via a Polyvinylpyrrolidone‐Assisted Aqueous Sol–Gel Process and Dielectric Properties
Author(s) -
Nakagauchi Ryo,
Kozuka Hiromitsu
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01910.x
Subject(s) - materials science , dielectric , thin film , polyvinylpyrrolidone , sol gel , aqueous solution , coercivity , analytical chemistry (journal) , oxide , polarization (electrochemistry) , perovskite (structure) , titanium , dielectric loss , mineralogy , niobium , spin coating , inorganic chemistry , chemical engineering , nanotechnology , metallurgy , chemistry , condensed matter physics , optoelectronics , physics , chromatography , polymer chemistry , engineering
Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 (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 /SiO 2 /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/cm 2 and a coercive field of 21 kV/cm.