The effects of boron on Tb0.27Dy0.73Fe2 compound

Magnetic properties of Y1−xGdxFe2By [x=0, 0.25, 0.5, 0.75, 1; y=0, 0.1, 0.15, 0.2]

“…Furthermore, the much lower energy level of the 2p band of boron compared to the 3d band of Fe is not expected to affect the density of states in the 3d band. Similar observation has been reported in the anisotropy compensated Ho 0.85 Tb 0.15 Fe 2 B x and Dy 0.73 Tb 0.27 Fe 2 B x systems [8,9].…”

“…The temperature variation of magnetization carried out at 9 kOe by Buschow and Van Stapele [13] did not show transition corresponding to the RFe 3 phase probably due to the broadening. Wu et al [9] have reported that in the case of Dy 0.27 Tb 0.73 Fe 2 alloys the addition of boron shifts the peritectic point which in turn leads to the formation of a single phase compound and a similar argument may be extended to the present situation as well.…”

“…Generally to obtain single RFe 2 phase, an excess of rare earth (due to the volatile nature of rare earths) or a reduction in Fe content has been the method followed. The addition of extra rare earths or reduction of Fe content changes the microstructure and hence the magnetic properties of these materials considerably [9]. Moreover, increase in the rare earth content changes the anisotropy while the reduction in the iron content affects the Curie temperature.…”

“…These compounds are known to possess large cubic anisotropy and highest Curie temperature (T C ) of all RTM 2 compounds (TM = transition metal) [1][2][3][4][5][6][7][8]. Generally, the ternary RFe 2 compounds are found to form with traces of secondary RFe 3 phase while their binary counterparts form in single RFe 2 phase [9]. Generally to obtain single RFe 2 phase, an excess of rare earth (due to the volatile nature of rare earths) or a reduction in Fe content has been the method followed.…”

“…Recently much attention has been paid to the effects of small atoms, viz., Be, B and C -which might substitute for Fe or occupy interstitial sites (there are several tetrahedral sites available in C15 compounds) * Corresponding author. -on the structural and magnetic properties of several RFe 2 compounds [8][9][10][11][12]. Of these, boron has been reported to stabilize the RFe 2 phase in several Pr, Nd based Laves phase compounds and anisotropy compensated Dy 0.73 Tb 0.27 Fe 2 [9][10][11].…”