"Magnetic and Crystal Structural Investigation of Four Heusler Alloys i" by Jax Wysong
 

Document Type

Other

Publication Date

2024

Abstract

Heusler compounds have recently been under investigation by the materials science community due to their potential for applications in spintronic devices while being able to boast high Curie temperatures well above room temperature. Another aspect of Heusler alloys is that they have the capability of being half metallic. This means that their majority-spin electronic band structure is a usual metallic one, while the minority band is semiconducting with a gap at the Fermi level. This research focuses on the synthesis and analysis of four Heusler compounds in the FeCr family: FeCrV0.5Co0.5Al, FeCrMnAl, FeCrV0.5Mn0.5Al, and FeCrV0.75Mn0.25Al. After synthesis, all of these samples were provided with heat treatment before having x-ray diffraction (XRD) and magnetic measurements taken. FeCrV0.5Co0.5Al was discovered to be single phase and cubic in structure, with B2 type disorder, while showing paramagnetic behaviors. The remaining three compounds, FeCrMnAl, FeCrV0.5Mn0.5Al, and FeCrV0.75Mn0.25Al, were all shown to pertain a cubic structure with A2-type disorder as well as paramagnetic behavior with weak magnetism.

Publisher

South Dakota State University

Rights

Copyright © 2024

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