Abstract
Congruent or stoichiometric LiNbO₃ fiber single crystals were grown by the μ-PD method, and the grown fiber crystals have the several (2 or 3) ridges with a diameter of 1.35~1.5 ㎜ and a length of 40~100 ㎜. In this μ-PD process, different growth rates (10~60 ㎜/h) were applied. Pt wire or LiNbO₃ crystal was used as a seed. The properties of grown LiNbO₃ fiber single crystals having a-axis or c-axis according to seeds were effected by the grown conditions(Pt tube diameter, pulling speed, after heater etc.). Disk-type LiNbO₃ samples were poled in condition of DC 5 V/㎝ at 1050, 1075 or 1100℃. XRD, SEM, conoscope image through the polarized microscope, TC measuring apparatus, optical transmittance measuring instrument are used to identify the properties of LiNbO₃.
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