Hydrothermal synthesis of nonlinear optical potassium niobate ceramic powder

Chung Hsin Lu*, Shih Yen Lo, Hong-Cheu Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

114 Scopus citations


Potassium niobate KNbO3 particles having nonlinear optical properties were successfully prepared via a hydrothermal process. When KOH, with a concentration of 8 M, reacted with Nb2O5 particles at 200°C, monophasic KNbO3 was obtained. The high concentration of KOH was found to be a critical requisite for the formation of KNbO3. Compared with the traditional solid-state reaction, the hydrothermal process significantly lowered the temperature required for synthesizing KNbO3. The added amounts of Nb2O5 in the hydrothermal reaction greatly influenced the morphology and particle size of KNbO3, as well as the intensity of the second harmonic generation.

Original languageEnglish
Pages (from-to)172-176
Number of pages5
JournalMaterials Letters
Issue number3-6
StatePublished - 1 Jan 1998


  • Electro-optic
  • Ferroelectric
  • Hydrothermal
  • Knbo
  • Nonlinear optical properties
  • Powder
  • Second harmonic generation
  • Synthesis

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