Magnetic properties of YGdFe17−x(Ga,Al)x (x=0–8)

Abstract

The effect of Ga∕Al substitution on the structural and magnetic properties of YGdFe17 has been investigated. A structural transformation from hexagonal to rhombohedral has been observed. The saturation magnetization increases up to x=1 (Ga)∕2 (Al) and then decreases with further increase of x. Curie temperature increases from 476 K for YGdFe17 to 595 K for YGdFe14Ga3 and 495 K for YGdFe14Al3 and decreases with further substitution of Ga∕Al. The easy magnetization direction is planar up to x=6 for Ga- and 7 for Al-substituted compounds and shifts to along c axis for x=8.

Influence of Si and Co substitutions on magnetoelastic properties of R2Fe17 (R=Y, Er and Tm) intermetallic compounds

“…In the past decade, many investigations were performed on R 2 Fe 17 compounds with the aim of improving their magnetic properties for practical applications as permanent magnets. For example, partial substitution of Cr, Si, Ga and Al for iron atoms in several R 2 Fe 17 compounds leads to significant increase in Curie temperature and to modifying their magnetic anisotropy [4][5][6][7][8][9]. R 2 Fe 17 compounds are either ferromagnetic system with R ¼ light rare-earth or ferrimagnetic system with R ¼ heavy rare-earth element [10,11].…”