The Effect of dopants on magnetic properties of the ordered Fe_{65-x}Al_{35-y}M_{x,y} (M=Ga,B,V; x,y=5,10) alloys

TL;DR

This study investigates how different dopants (Ga, B, V) affect the magnetic properties of ordered Fe-Al alloys through various experimental techniques, revealing dopant-specific magnetic state transformations and property modifications.

Contribution

It provides new insights into how Ga, B, and V dopants alter the magnetic states and characteristics of Fe-Al alloys, with detailed experimental analysis.

Findings

Ga doping increases magnetic transition fields.

B addition induces ferromagnetism with high magnetic properties.

V substitution reduces magnetic characteristics and hyperfine fields.

Abstract

The results of X-ray diffraction, complex in-field (up to 9 T) and temperature (5-300 K) Moessbauer and magnetometric studies of the ordered Fe_{65}Al_{35-x}M_x (M=Ga, B; x=0,5,10) and Fe_{65-x}V_xAl_{35} (x=5,10) alloys are presented. Analysis of the magnetometry studies shows that the systems Fe_{65}Al_{35} and Fe_{65}Al_{35-x}Ga_x (x=5, 10) are characterized by two different magnetic states with essentially distinguishing hysteresis loops and AC susceptibility values. The temperature and external magnetic field values inducing the transition from one magnetic state to another are higher in the Ga-doped alloys than in the reference Fe_{65}Al_{35} alloy. The boron addition transforms the magnetic state of the initial alloy Fe_{65}Al_{35} into a ferromagnetic one exhibiting high magnetic characteristics. Substitution of V for Fe in the ternary alloys Fe_{65-x}V_xAl_{35} results in reduction of magnetic characteristics and collapsing of 57Fe hyperfine magnetic filed.