Crystal growth of alkali metal ion doped potassium niobate fiber single crystals

✍ Scribed by H. Kimura; R. Tanahashi; H.Y. Zhao; K. Maiwa; Z.X. Cheng; X.L. Wang

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 502 KB
• Volume: 32
• Category: Article
• ISSN: 0925-3467
• DOI: 10.1016/j.optmat.2010.02.004

✦ Synopsis

Alkali metal (Na, Rb or Cs) ion doped KNbO 3 fiber single crystals are grown using an original pulling down method, to improve their composition change during a crystal growth, by means of co-doping of small ionic size Na and large ionic size Rb or Cs into KNbO 3 . In spite of the co-doping, single crystals can be grown with orthorhombic single-phase at room temperature, as well as pure KNbO 3 . Their electric properties, such as impedance, are changed depending on the doping ions. Na and Rb co-doped KNbO 3 is promising Pb free ferroelectric and piezoelectric crystals.