Campus Units

Ames Laboratory, Chemistry

Document Type

Article

Publication Version

Published Version

Publication Date

2005

Journal or Book Title

Inorganic Chemistry

Volume

44

Issue

20

First Page

7047

Last Page

7055

DOI

10.1021/ic0506106

Abstract

The Ln3OsO7 (Ln = Sm, Eu, Gd) compounds were grown as single crystals from molten hydroxide fluxes. At temperatures above 235, 330, and 430 K, respectively, the Ln3OsO7 (Ln = Sm, Eu, Gd) compounds exist in the orthorhombic space group Cmcm. When they are cooled below these temperatures, the compounds undergo a structural phase transition from space group Cmcm to P21nb. The structure transition results in a loss of lattice centering, a doubling of the b axis, a distortion of the vertex-shared Os−O chains, and a reduction in the coordination of one of the rare earth cations from 8-fold to 7-fold. Sm3OsO7 and Eu3OsO7 exhibit complex magnetic behavior below about 50 K, and Gd3OsO7 shows a ferromagnetic-like order at 34 K in applied fields of less than 10 kG.

Comments

Reprinted (adapted) with permission from Inorg. Chem., 2005, 44 (20), pp 7047–7055. Copyright 2005 American Chemical Society.

Copyright Owner

American Chemical Society

Language

en

File Format

application/pdf

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