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)
作者:Jérome Roger、Volodymyr Babizhetskyy、Thierry Guizouarn、Kurt Hiebl、Roland Guérin、Jean-François Halet
DOI:10.1016/j.jallcom.2005.09.012
日期:2006.6
RE 5 Si 3 B x of Mn 5 Si 3 -type and the solid solution REB 2− x Si x of AlB 2 -type. Prior to this work, the binary systems RE–Si and RE–B, which form the boundary of each diagram, were also re-investigated. In addition to the 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) which were previously reported or will be presented in a forthcoming paper, the
摘要 利用 X 射线衍射、扫描电子显微镜和电子探针微量分析等实验技术,在 1270 K 下测定了三元 RE-Si-B 图中的固态相平衡(RE = Dy、Ho、Er 和 Y)。通常,每个图都获得了三个三元相:具有四方对称性的线状化合物 RE 5 Si 2 B 8、Mn 5 Si 3 型的硼插入 Nowotny 相 RE 5 Si 3 B x 和固溶体 REB 2 - x Si x 的AlB 2 -型。在这项工作之前,还重新研究了构成每个图边界的二元系统 RE-Si 和 RE-B。除了先前报道或将在即将发表的报告中介绍的 RE 5 Si 3 (Mn 5 Si 3 型,RE = Dy、Ho 和 Y)和 Dy 3 Si 4(Ho 3 Si 4 型)的结构之外纸,RE 5 Si 4(Sm 5 Ge 4 型,RE = Dy 和 Ho)、DySi(CrB 型)和 HoSi 的 X 射线单晶结构在两种多晶型变体中,即