Investigation on the 773 K isothermal section of La-Fe-Sn ternary systems by X-ray powder diffraction

Abstract

The 773 K isothermal section of the La-Fe-Sn ternary system was investigated and constructed by X-ray powder diffraction (XRD). The existence of two reported ternary intermetallic compounds, La 6 Fe 13 Sn and La 3 FeSn 6 , is confirmed in this work. Compared with other R-Fe-Sn phase diagrams (R = Pr and Sm), the binary alloys Fe 3 Sn and Fe 5 Sn 3 are not present. The compound Fe 3 Sn 2 was observed from the XRD pattern of Fe 3 Sn 2 samples, but it is not an equilibrium phase at 773 K and decomposes into Fe and FeSn phases completely for a longer heat treated time. Up to now, the crystal structure data of La 2 Sn 3 has not been reported, so the X-ray pattern of La 2 Sn 3 was only estimated. The phase relationship for this compound was drawn by a dotted line.

Hf3Fe4Sn4 and Hf9Fe4−Sn10+: Two stannide intermetallics with low-dimensional iron sublattices

“…Fe layer separated by R and Sn atoms interspersed. [13][14][15] The Nd and Pr analogues order ferrimagnetically at 374 K and 396 K, respectively, and have been investigated due to their similarity to Nd -Fe -B commercial hard magnets. 16 They undergo spin rearrangements at low temperature, and their magnetic behavior has been primarily attributed to the Fe sublattice.…”