Publication Date

1991

Document Type

Dissertation/Thesis

First Advisor

Krause, Brigitte (Professor of physics)

Degree Name

M.S. (Master of Science)

Department

Department of Physics

LCSH

Tungsten bronze

Abstract

A two dimensional refinement of a (1,6) phase intergrowth tungsten bronze (K[sub x]WO[sub 3]) structure was attempted. The intensities of diffracted x-ray radiation from single-crystal samples were recorded and measured. The unit cell shape was confirmed as orthorhombic with measured lattice constants a = 62.13 (1) A, b = 7.339 (2) A, c = 7.77 (1) A. The examination: of a photographic record of “reflections” and measured intensity data indicate a unit cell symmetry corresponding to either Pn- nm or Pnn2. A three dimensional least-squares refinement of a model structure was attempted, but the complexity of the problem at hand and lack of time allowed for only a two dimensional refinement. The results are discussed in this paper.

Comments

Includes bibliographical references (leaf [86]).

Extent

ix, [86] pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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