Ferroelectric properties of (Li,K,Na)NbO

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概要

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• (Li<inf>x</inf>K<inf>0.1</inf>Na<inf>0.9−</inf><inf>x</inf>)NbO<inf>3</inf>(x = 0, 0.05, 0.1, and 0.2) epitaxial films were prepared by pulsed laser deposition on SrRuO<inf>3</inf>/(001)SrTiO<inf>3</inf>substrates. Reciprocal space mapping indicated that the crystal systems of the films were antiferroelectric orthorhombic at x = 0, antiferroelectric orthorhombic and/or ferroelectric monoclinic depending on film thickness at x = 0.05, ferroelectric monoclinic at x = 0.1, and ferroelectric rhombohedral at x = 0.2. Polarization–electric field responses were ferroelectric for all the films. At x = 0.05, the remanent polarization was maximized to ∼35 µC/cm², which was more than four times larger than that at x = 0. This was probably due to a stabilized monoclinic phase under a high electric field.

• 2014-09-03

著者

• Fujii Ichiro

  Department of Materials Chemistry, Ryukoku University, Otsu 520-2194, Japan.

関連論文

• Ferroelectric properties of (Li,K,Na)NbO

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