Bulletin of ANPA

Abstract submitted to ANPA Conference July 14–16, 2023

Volume 5, Number 1

Condensed Matter Physics and Material Science

Abstract ID: ANPA2023-N00058

Abstract:

ANPA2023-N00058: Investigation of CoFeVAl and CoFeV0.5Mn0.5Al for spintronic applications: Experiment and theory

Authors:

• Parashu Kharel; Department of Physics, South Dakota State University

• Gavin Baker; South Dakota State University

• Matthew Wieberdink; South Dakota State University

• and Pavel Lukashev; University of Northern Iowa

Magnetic materials exhibiting high spin polarization at the Fermi level have applications in spin-transport-based devices. Heusler alloys showing this behavior have attracted much attention because of their tunable magnetic and electronic properties, and high Curie temperature much above room temperature. We have carried out combined experimental and theoretical investigations of two such materials CoFeVAl and CoFeV0.5Mn0.5Al. The first-principle calculations indicates that both CoFeVAl and CoFeV0.5Mn0.5Al are ferromagnetic with high spin polarization of 87% and 96%, respectively. We have synthesized bulk ingots of both samples in cubic crystal structure with some structural disorder. The magnetic properties of CoFeV0.5Mn0.5Al are consistent with the theoretical prediction but that of the parent compound are slightly different. These results indicate that CoFeV0.5Mn0.5Al with nearly half-metallic band structure and high Curie temperature above room temperature has potential for spintronic applications. This research is supported by the National Science Foundation (NSF) under Grant Numbers 2003828 and 2003856 via DMR and EPSCoR.

To cite this abstract, use the following reference: https://anpaglobal.org/conference/2023/ANPA2023-N00058