Na<sub>4</sub>La<sub>2</sub>(CO<sub>3</sub>)<sub>5</sub> and CsNa<sub>5</sub>Ca<sub>5</sub>(CO<sub>3</sub>)<sub>8</sub>: Two New Carbonates as UV Nonlinear Optical Materials
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https://figshare.com/articles/dataset/Na_sub_4_sub_La_sub_2_sub_CO_sub_3_sub_sub_5_sub_and_CsNa_sub_5_sub_Ca_sub_5_sub_CO_sub_3_sub_sub_8_sub_Two_New_Carbonates_as_UV_Nonlinear_Optical_Materials/2268751
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资源简介：
Two
nonlinear optical crystal carbonates (Na4La2(CO3)5 and CsNa5Ca5(CO3)8 were successfully synthesized by hydrothermal
method, and both of them crystallized in the same noncentrosymmetric
hexagonal space group P63mc (No.
186). The structure of Na4La2(CO3)5 consists of a three-dimensional network made up of
[CO3] triangles as well as irregular [Na0.67La0.33O10] and [NaO8] polyhedra.
The structure of CsNa5Ca5(CO3)8 can be described as the standing-on-edge [CO3]
groups connect the adjacent infinite [CaCO3]∞ layers in the ab plane to construct a framework
with four types of channels running parallel to [010]. The Na, Cs,
and [Na0.67Ca0.33] atoms reside in these channels.
The measurement of second harmonic generation (SHG) by the method
adapted from Kurtz and Perry indicated that Na4La2(CO3)5 and CsNa5Ca5(CO3)8 were phase-matchable in the visible region and
exhibited SHG responses of approximately 3 and 1 × KH2PO4 (KDP). Meanwhile, they exhibited wide transparent
region with short UV cutoff edge at about 235 and 210 nm, respectively,
suggesting that these crystals as NLO materials may have potential
applications in the UV region.
创建时间：
2016-02-17
