Barium chromium oxide, Ba3Cr2O8, as grown by the traveling solvent floating-zone technique

被引：7

作者：

Aczel, Adam A. ^{[1
]}

Dabkowska, Hanna A.

Britten, James F.

Harrington, Laura E.

Luke, Graeme M.

机构：

[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[2] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada

来源：

ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE | 2007年 / 63卷

关键词：

D O I：

10.1107/S1600536807057583

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Large single crystals of the incongruently melting compound tribarium dichromium octaoxide, Ba3Cr2O8, were grown by the traveling solvent floating-zone technique for the first time and characterized by X-ray diffraction at room temperature. The structure is composed of CrO43- tetrahedra and Ba2+ ions. The chromium ions are found in the rare +5 valence state and form double-layered triangular lattices, which are stacked along the c axis with threefold periodicity. All atoms lie on special positions. One Ba, one O and the Cr atoms have site symmetry 3m, the other Ba atom has site symmetry 3m, and the other O atom has site symmetry m. Magnetic measurements suggest that this material is a spin dimer system with a spin-singlet ground state.

引用

页码：I196 / U45

页数：10