Award/Availability

Open Access Honors Program Thesis

Keywords

Nanostructured materials--Magnetic properties; Order-disorder in alloys; Gadolinium; Melt spinning;

Abstract

As nanoscale science continues to flourish, scientists strive to understand how structure and order (or disorder) on the nanoscale contribute to macroscopic properties, such as magnetism. This study examines alloys of gadolinium and iron that have been nanostructured through the process of melt-spinning. The result was a two-part system consisting of small (~70 nm) gadolinium grains surrounded by an amorphous gadolinium and iron matrix. Measurements of the samples’ DC magnetization and AC susceptibility were performed. By looking at the paramagnetic to ferromagnetic transition in the materials, the critical exponents were obtained and used to classify and understand how the addition of iron and the melt-spinning process affected the magnetic properties. By using relatively simple magnetic atoms, we intend for this study to be a fundamental look at disorder on the nanoscale and a model system for future investigations.

Date of Award

2008

University Honors Designation

A thesis submitted in partial fulfillment of the requirements for the designation University Honors

Date Original

2008

Object Description

47 p.

Language

EN

File Format

application/pdf

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