Synthesis, structures and magnetic properties of a family of one-dimensional oxides

被引：0

作者：

Loye, HCZ

Nunez, P

Rzeznik, MA

机构：

来源：

SOLID-STATE CHEMISTRY OF INORGANIC MATERIALS | 1997年 / 453卷

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D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The one-dimensional compounds Sr3MgPtO6, Sr3MgIrO6, Sr3MgRhO6, Sr3GdRhO6, have been synthesized and structurally characterized by Rietveld refinement of powder X-ray diffraction data. All four compounds are isostructural with the rhombohedral K4CdCl6-type structure. The structure consists of infinite one-dimensional chains of alternating face-shared MO6 octahedra (M = Pt, Ir, Rh) and M'O-6 (M' = Gd, Mg) trigonal prisms. The strontium cations are located in a distorted square antiprismatic environment. Magnetic susceptibility data show that both Sr3MgIrO6 and Sr3MgRhO6 obey the Curie-Weiss law with theta = -6(1) K, and theta = -15(3)K, respectively. Sr3GdRhO6 obeys the Curie law with mu(eff) = 7.80 B.M, consistent with an oxidation state of +3 for both rhodium and gadolinium.

引用

页码：379 / 385

页数：7