The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Growth and Characterization of $K_3LiNb_6O_{17}$ Single Crystals

  • Tae Hoon Kim (Department of Physics, Pusan National University) ;
  • Seong Hyun Kim (Electronics and Telecommunications Research Institute) ;
  • Min Su Jang (Department of Physics, Pusan National University) ;
  • Jung Nam Kim (Department of Physics, Pusan National University) ;
  • Ji Hyun Ro (Department of Physics, Pusan National University)
  • Published : 2000.09.01
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Abstract

Starting from the stoichiometric composition of $K_2$CO$_3$: Li$_2$CO$_3$: Nb$_2$O$_5$=3 : 2 : 5 with the mole ratio, $K_3$LiNb$_6$O$_17$ 17/ single crystals were grown using the Czochralski method. Although the starting melt composition corresponds to the $K_3$Li$_2$Nb$_5$O$_15$ crystals, the chemical composition of the as grown crystals appears to be $K_2.95$Li$_1.33$Nb$_6.17$O$_17$ or $K_2.60$Li$_1.17$Nb$_{5.44}$ 5.44/O$_{15}$ which relatively contain fewer Li ions than $K_3$Li$_2$Nb$_5$O$_15$ crystals. We investigated the influence of the deficiency of the Li ions in the tetragonal tungsten bronze structure through the measurements of DE loop, temperature dependent dielectric constant, differential thermal analysis and temperature dependent X-ray diffraction pattern.

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References

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