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Growth, Structure, and Properties of a Multifunctional Crystal Pr2CaB10O19
Jingcheng Feng1,2, Youquan Liu1,2, Yanling Cheng3
1Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
Abstract:
A new praseodymium-based borate crystal Pr2CaB10O19 (PCB) has been grown through the high temperature solution method. PCB crystallizes in monoclinic space group C2 with unit cell parameters of a = 10.9475(10) Å, b = 6.5343(7) Å, c = 9.0336(8) Å, β = 91.652(3)°, and Z = 2, in which B5O12 groups and PrO10 and CaO8 polyhedra constitute the three-dimensional framework. PCB exhibits a similar second harmonic response intensity to that of La2CaB10O19 and an intense orange fluorescence emission with a long fluorescence lifetime at about 610 nm excited by a xenon lamp light of 466 nm. The band gap, partial density of states, and birefringence have been investigated via theoretical calculations.
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