Publication Date

1983

Document Type

Dissertation/Thesis

First Advisor

Kimball, Clyde W.

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Physics

LCSH

Iron compounds; Superconductors; Mössbauer spectroscopy

Abstract

A Mossbauer effect study was designed to use ⁵⁷Fe as an impurity probe in the superconducting Chevrel phase compound Dy₁.₀Mo₆S₈ over the temperature range 0.43 K to 300 K. The material produced, Dy₁.₀⁵⁷Fe₀.₀₅Mo₆S₈, was found to be single phase within 1-2% by analysis of X-ray powder diffraction patterns. The Mossbauer spectra show at least two different Fe sites. At 80 K and below the spectra show a six line magnetic pattern along with-an asymmetric quadrupole doublet. At 20 K and below the doublet becomes magnetically split as well. At 200 K and above the lines are broadened, indicating diffusion of the Fe atoms. Comparisons are made with results from other Chevrel phase studies in order to understand our results.

Comments

Bibliography: leaf 24.

Extent

24 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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