K<sub>3</sub>B<sub>6</sub>O<sub>10</sub>Cl: A New Structure Analogous to Perovskite with a Large Second Harmonic Generation Response and Deep UV Absorption Edge
Hongping Wu(Chinese Academy of Sciences), Shilie Pan(Chinese Academy of Sciences), Kenneth R. Poeppelmeier(Northwestern University), Hongyi Li(Chinese Academy of Sciences), Dianzeng Jia(Xinjiang University), Zhaohui Chen(Xinjiang Technical Institute of Physics & Chemistry), Xiaoyun Fan(Xinjiang Technical Institute of Physics & Chemistry), Yun Yang(Xinjiang Technical Institute of Physics & Chemistry), James M. Rondinelli(Argonne National Laboratory), Haosu Luo(Shanghai Institute of Ceramics)
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Abstract
Introduction of the Cl(-) anion in the borate systems generates a new perovskite-like phase, K(3)B(6)O(10)Cl, which exhibits a large second harmonic response, about four times that of KH(2)PO(4) (KDP), and is transparent from the deep UV (180 nm) to middle-IR region. K(3)B(6)O(10)Cl crystallizes in the noncentrosymmetric and rhombohedral space group R3m. The structure consists of the A-site hexaborate [B(6)O(10)] groups and the BX(3) Cl-centered octahedral [ClK(6)] groups linked together through vertices to form the perovskite framework represented by ABX(3).
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