title: Ba3Y2B6O15, a novel cubic borate.
abstract: Single crystals of tribarium diyttrium hexaborate, which crystallized in the cubic system, have been obtained by spontaneous crystallization from a high-temperature melt using Li(2)O-BaO-B(2)O(3) as flux. Its structure is composed of isolated [B(2)O(5)](4-) groups, irregular BaO(9) polyhedra and regular YO(6) polyhedra which occupy alternate sites running along the [111] direction. Irregular BaO(9) polyhedra and regular YO(6) polyhedra construct a three-dimensional framework, which is reinforced by [B(2)O(5)](4-) groups.
authors: Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors: Sangen
authors: S
authors: Zhao
authors: Jiyong
authors: J
authors: Yao
authors: Guochun
authors: G
authors: Zhang
authors: Peizhen
authors: P
authors: Fu
authors: Yicheng
authors: Y
authors: Wu