Yongfa Kong et al 1999 J. Phys.: Condens. Matter 11 2139 doi:10.1088/0953-8984/11/9/010
absorption spectra of pure lithium niobate crystals
Yongfa Kong, Wanlin Zhang, Xiaojun Chen, Jingjun Xu and Guangyin Zhang
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absorption spectra of congruent pure and nearly stoichiometric lithium niobate crystals have been investigated. Experimental results show that each absorption band consists of three components. The
absorption peaks were considered to relate to the stretching vibration of protons located at 336 pm O-O bonds in oxygen triangles nearest to the Li site. The
absorption peak corresponds to protons directly substituting for
ions; the 3481 and
peaks are suggested to be associated with protons occupying intrinsic
defects near
and two different ion environments cause these two absorption peaks.
Issue 9 (8 March 1999)
Received 23 June 1998, in final form 3 November 1998
absorption spectra of pure lithium niobate crystals
Yongfa Kong et al 1999 J. Phys.: Condens. Matter 11 2139
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