Stabilization of antiferromagnetism in CeFe2 alloys: Effects of chemical and hydrostatic pressure

TL;DR

This study investigates how chemical doping and hydrostatic pressure influence antiferromagnetism in CeFe2 alloys, revealing that pressure generally stabilizes AFM order, likely through enhanced hybridization.

Contribution

It demonstrates that external pressure and specific dopings can stabilize antiferromagnetism in CeFe2 alloys, highlighting the role of hybridization effects.

Findings

Al doping induces FM-AFM transition and reduces TC.

Mn and Sb doping decrease TC.

External pressure enhances antiferromagnetism.

Abstract

Effects of Al, Mn and Sb dopings in CeFe2 and effect of applied pressure have been investigated. Al doping gives rise to the FM-AFM transition and a reduction in the magnetic moment and TC values, clearly indicating the growth of the AFM component. Mn and Sb dopings only cause a reduction in TC value. It is found that in general external pressure enhances the antiferromagnetism in both the pure and the doped alloys. Enhancement of the Ce 4f- Fe 3d hybridization as a result of dopings and with the external pressure may be the reason for the stabilization of antiferromagnetism in these alloys.