Magnetic properties of Er2Co17−xSix compounds

Effect of Al on the structural and magnetic properties of Er2Co17−xAlxcompounds

“…It can be seen that the T C decreases with increase in Al concentration, which is mainly due to the weakening of the Co-Co exchange interaction. A similar reduction has been reported in Si and Ga substituted compounds as well [8,9].…”

“…Compounds with x > 4 always showed other impurity phases, in addition to the 2:17 phases, and therefore were not used for the present study. In this context, it is of interest to note that Er 2 Co 17−x Si x compounds have a preference to crystallize in the Th 2 Ni 17 -type structure [8] while the Er 2 Co 17−x Ga x compounds crystallize in the Th 2 Zn 17 -type a Taken from [9].…”

“…Substitution of nonmagnetic elements for Co has been found to have a profound influence on the magnetic properties in general and magnetic anisotropy in particular, in various R 2 Co 17 compounds. Recently, there have been reports on the substitution of Si and Ga in the Er 2 Co 17 compound [8,9]. In order to gain further insight into the fundamental aspects of the magnetism in these compounds and also to search for novel hard magnetic materials, we have studied the effect of Al substitution for Co in Er 2 Co 17 .…”

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

“…It is clear that T max is much lower in the cobalt-free compound. This implies that the axial anisotropy field increases with Co substitution at low temperatures and this is due to the fact that Co induces axial anisotropy in these typical compounds [22][23][24]. Therefore, we need stronger applied fields to observe a pronounced maximum at Dl curve.…”

Single crystal investigation of the new phase Er0.85Co4.31Si and of CoSi

“…Quite recently, the other new ternary phase, ErCo 5 Si 3 , was found and its crystal structure has been determined by X-ray single crystal method [14]. The solubility of silicon in the binary Er 2 Co 17 phase was studied in [15]. According to the accepted phase diagram of the Er-Co system [16], a hexagonal phase of composition ErCo 5 (structure type CaCu 5 ) exists in a limited temperature range; it forms peritectically at 1340°C and decomposes eutectoidally at 1240°C.…”