Solid state phase equilibria in the ternary Nd–Si–B system at 1270K

The ternary RE–Si–B systems (RE=Dy, Ho, Er and Y) at 1270K: Solid state phase equilibria and magnetic properties of the solid solution REB2−xSix (RE=Dy and Ho)

“…Phase diagrams were initially reported for RE = La, Ce, Er and Y at 1070 K [1,2], which did not give evidence concerning the existence of ternary phases, with the exception of very narrow homogeneity ranges around some binary compositions. Recently, we have published the isothermal sections of the ternary systems Gd-Si-B and Nd-Si-B at the higher temperature of 1270 K [3,4]. No ternary phases in the Nd-Si-B system were found with the exception of This paper deals with the isothermal section of the ternary RE-Si-B phase diagrams (RE = Dy, Ho, Er and Y) at 1270 K. Crystal structures of RE 5 Si 3 (Mn 5 Si 3 -type, RE = Dy, Ho and Y) and Dy 3 Si 4 (Ho 3 Si 4 -type) were reported recently or will appear soon in the literature [9,10].…”

Rare‐earth Metal Borosilicides R9Si15–xB3 (R = Tb, Yb): New Ordered Structures Derived from the AlB2 Structure Type

“…[1] A few more have been synthesized with high silicon content. [2][3][4][5][6][7][8] Indeed, full investigations on phase relations in the R-Si-B systems (R = rare-earth metal) are scarce. Ternary phase diagrams R-Si-B were reported a while ago for R = La, Ce, Er, and Y at 1070 K by Kuz'ma and co-workers.…”

“…the existence of ternary phases, with the exception of narrow homogeneity ranges around some binary compositions. More recently, some of us have reported the isothermal sections of some ternary systems R-Si-B (R = Y, Nd, Gd, Dy, Ho, Er) at the temperature of 1270 K. [2][3][4] In general, three ternary phases were found in each system, except for Nd: The stoichiometric compound R 5 Si 2 B 8 (Gd 5 Si 2 B 8 structure type), [5,6] the boroninserted Nowotny phase R 5 Si 3 B x (Mn 5 Si 3 -type structure), [7] and the solid solution RB 2-x Si x (AlB 2 -type structure). [8] For the Nd-Si-B system, only Nd 5 Si 3 B x was found.…”

Lamellar structures in neodymium borides

“…The Nd-B phase diagram [5,6] contains four phases, namely NdB 66 , NdB 6 , NdB 4 (ThB 4 -type, P4/mbm, [7][8][9] and Nd 2 B 5 . The known crystal structures of Ln 2 B 5 belong to the simple Sm 2 B 5 -type (also for Ln ¼ Gd, P2 1 /c, [10,11]) and the more complex Pr 2 B 5 -type structure (C2/c, [12]), respectively.…”

“…The known crystal structures of Ln 2 B 5 belong to the simple Sm 2 B 5 -type (also for Ln ¼ Gd, P2 1 /c, [10,11]) and the more complex Pr 2 B 5 -type structure (C2/c, [12]), respectively. According to a recent analysis [9], the structure of Nd 2 B 5 was assigned to the Pr 2 B 5 -type structure, however, accurate X-ray studies on large single crystals indicated deviations. The diffraction patterns showed very weak reflections in addition to those expected for the Pr 2 B 5 -type, and first attempts of indexing indicated a threefold superstructure along a*.…”