期刊
SOLID STATE SCIENCES
卷 4, 期 3, 页码 323-327出版社
EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/S1293-2558(01)01259-6
关键词
-
We report the synthesis and initial characterization of BaMnTi5O12, the first example of an oxide displaying an interesting tripled hollandite-type structure. Shiny black crystals which crystallize in the monoclinic space group, P2/n, with a = 9.921(3) Angstrom, b = 8.8716(22) Angstrom, c = 10.309(3) Angstrom, and beta = 91.24(3)degrees, were grown from a borate-based melt in vacuo. The structure contains layers made up of edge-shared pairs of TiO6, octahedra forming a hollandite framework. The Ba2+ ions occupy large high coordination number channel sites. Oxidation states of the transition metal ions are such that a charge balance of one half barium ion per three framework units with an ideal stoichiometry Ba0.5M3O6, produces the tripling. In addition, crystals of Ba2MnTi5O13, monoclinic, space group C2/m, a = 15.075(1) Angstrom, b = 3.9470(2) Angstrom, c = 9.0985(5) Angstrom, and beta = 98.23(1)degrees, which is isostructural with the mineral jeppeite, K2Ti6O13, were also grown. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All tights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据