Crystal Structure of Lithium Yttrium Borate LiY6O5（BO3）3

1 INTRODUCTION In recent years, more and more attention has been paid to rare-earth borates due to their excellent pro- perties, such as YCa4O(BO3)3(YCOB)1], YAl3(BO3)4 (YAB)2] and La2CaB10O193] for nonlinear optical materials and self-frequency doubling materials as well as YBO3:Eu for red phosphor materials4] and Li6M1-xCex(BO3)3 (M = Y, Gd) for neutron detec- tors5]. In this work, we focus our research interest on LiY6O5(BO3)3 as hosts for VUV (vacuum ultraviolet) l…

Crystal Structure of Lithium Yttrium Borate LiY6O5(BO3)3

Single crystals of LiY6O5(BO3)3 were obtained by the flux method and its structure was determined by a four-circle automatic diffractometer with a MoKa radiation. It crystallizes in monoclinic, space group P21/n with a = 8.330(3), b = 15.444(4), c = 8.780(3) (A), β = 91.85(3)°, V =1129.0(6) (A)3, Z = 4, Mr= 796.83, F(000) = 1456, μ = 30.567 mm-1, Dc = 4.688 g/cm3, the final R =0.0722 and wR = 0.1304. It exhibits a three-dimensional framework of yttrium-oxygen polyhedra interconnected by common edges and corners. B and Li atoms are located in the planes and cavities formed by oxygen atoms, respectively.