Optical Studies of Ba_<4+x>Na_<2-x>Nb_<10-x>Ti_xO_<30> Crystals
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概要
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Crystals of Ba_<4+x>Na_<2-x>Nb_<10-x>Ti_xO_<30> (x<0.8) were pulled from the melts and their optical and dielectric properties were examined. They were all biaxial, though the orthorhombic-to-tetragonal transition point was lowered with Ti substitution. The birefringence n_b-n_a was so small that any detwinning procedure seemed unnecessary. The figure of merit for electrooptical performance was larger than that of Ba_2NaNb_5O_<15>. An analysis of the observed results in birefringences and half-wave voltages was performed in comparison with a phenomenological calculation based on the spontaneous Kerr effect.
- 社団法人応用物理学会の論文
- 1974-01-05
著者
-
Ikeda Takuro
Department Of Applied Physics Faculty Engineering Tohoku University
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Fujimura Itaru
Department Of Applied Physics Faculty Of Engineering Tohoku University
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