A Neutron Diffraction Study of the Structure of Iron Phosphate Glasses

Abstract

Iron phosphate (Fe2O3-P2O5) glasses with a high Fe2O3 content are particularly interesting in that they exhibit short range antiferromagnetic (speromagnetic) ordering at low temperatures. Neutron diffraction techniques have been employed to investigate the atomic structure of iron phosphate glasses, as a function of composition between 30 and 44 mol% Fe2O3, and the data are compared with two structural models in which the Fe atoms are either tetrahedrally or 6-fold coordinated by oxygen. It is concluded that the structure is much more complicated than either of these models would suggest and that it includes Fe3+ ions in both tetrahedral and octahedral coordination. Fe2+ ions are also present in octahedral, and possibly 5-fold, coordination.

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

0031-9090

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2008 Society of Glass Technology, All rights reserved.

Publication Date

01 Feb 2008

This document is currently not available here.

Share

 
COinS