Synthesis and characterization of a new rare earth borate nonlinear optical crystal K7PbLu2B15O30
DALTON TRANSACTIONS(2023)
摘要
A new complex rare earth borate K7PbLu2B15O30 was prepared by the spontaneous crystallization method. K7PbLu2B15O30 is crystallized in the chiral trigonal space group R32 with cell parameters a = b = 13.0893(3) & ANGS;, c = 15.2379(6) & ANGS;, & alpha; = & beta; = 90 & DEG;, & gamma; = 120 & DEG;, and Z = 3. The basic structure of the crystal can be seen as composed of B5O10 groups and LuO6 polyhedra sharing oxygen atoms, while K+ and Pb2+ fill the space to balance the charge. The UV transmission cut-off edge of K7PbLu2B15O30 was less than 300 nm, and the powder SHG response was roughly 1.1 times that of KDP. Furthermore, a first-principles analysis was performed to see more about the relationship between the crystal structure and optical characteristics.
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关键词
new rare earth,crystal
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