title: Lithium potassium borate and lithium rubidium borate: new non-linear optical crystals
abstract: The title compounds, LiKB(4)O(7) and LiRbB(4)O(7), are newly developed non-linear optical crystals containing two kinds of anionic groups, namely (B(3)O(8))(7-) and (B(5)O(10))(5-). The (B(3)O(8))(7-) groups form infinite spiral chains parallel to the [100] direction, which are interconnected by sharing O atoms with (B(5)O(10))(5-) groups.
authors: Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aobayama 08, 980-8579 Sendai, Japan. ono@crystal. apph.tohoku.ac.jp.
authors: Y
authors: Ono
authors: M
authors: Nakaya
authors: T
authors: Kajitani
authors: T
authors: Sugawara
authors: N
authors: Watanabe
authors: H
authors: Shiraishi
authors: R
authors: Komatsu