Enhanced ferroelectric properties of LiNbO3 substituted Na0.5K0.5NbO3 lead-free thin films grown by chemical solution deposition
- 24 November 2008
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 93 (21), 212905
- https://doi.org/10.1063/1.3037214
Abstract
We have fabricated environmental friendly lead-free ferroelectric Na0.5K0.5NbO3 (NKN) and 0.95Na0.5K0.5NbO3–0.05LiNbO3 (0.95NKN-0.05LN) thin films by chemical solution deposition using metal-organic compounds, and studied the effects of LN substitution through the dielectric and ferroelectric properties. The small amount of LN substitution for NKN thin film led to a marked improvement in leakage current properties at the high electric field region. Furthermore, the 0.95NKN-0.05LN thin film (350nm) displayed clear ferroelectricity with well saturated P-E hysteresis loop with 2Pr and 2Ec values of 19.5μC∕cm2 and 91kV∕cm, respectively. The 0.95NKN-0.05LN films will be interesting for applications in lead-free ferroelectric and piezoelectric devices.Keywords
This publication has 22 references indexed in Scilit:
- Effect of (Na,K)-Excess Precursor Solutions on Alkoxy-Derived (Na,K)NbO3 Powders and Thin FilmsJapanese Journal of Applied Physics, 2007
- Chemical Processing and Characterization of Ferroelectric (K,Na)NbO3 Thin FilmsJapanese Journal of Applied Physics, 2007
- Lead-Free Piezoelectric (K,Na)NbO3 Thin Films Derived from Metal Alkoxide PrecursorsJapanese Journal of Applied Physics, 2007
- Piezoelectric properties of (K0.5Na0.5)(Nb1−xTax)O3−K5.4CuTa10O29 ceramicsJournal of Applied Physics, 2005
- Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3–LiNbO3 ceramicsApplied Physics Letters, 2004
- Lead-free piezoceramicsNature, 2004
- Piezoelectric Properties of Spark-Plasma-Sintered (Na0.5K0.5)NbO3–PbTiO3CeramicsJapanese Journal of Applied Physics, 2002
- Relaxor single crystals in the (Bi1/2Na1/2)1−xBaxZryTi1−yO3 system exhibiting high electrostrictive strainJournal of Applied Physics, 2001
- Lead-free high-strain single-crystal piezoelectrics in the alkaline–bismuth–titanate perovskite familyApplied Physics Letters, 1998
- Properties of Hot‐Pressed Ferroelectric Alkali Niobate CeramicsJournal of the American Ceramic Society, 1967