Structure and magnetic properties of RNi (R=Gd, Tb, Dy, Sm) and R6M1.67Si3 (R=Ce, Gd, Tb; M=Ni, Co) hydrides
作者:Yu.L. Yaropolov、A.S. Andreenko、S.A. Nikitin、S.S. Agafonov、V.P. Glazkov、V.N. Verbetsky
DOI:10.1016/j.jallcom.2011.01.047
日期:2011.9
Abstract The paper reports the influence of hydrogen absorption on the structure and magnetic properties of intermetallic compounds RNi (R = Gd, Tb, Dy, Sm) and R 6 M 1.67 Si 3 (R = Ce, Gd, Tb; M = Ni, Co). It is demonstrated that the ternary hydrides GdNiH 3.2 , TbNiH 3.4 , DyNiH 3.4 , and SmNiH 3.7 have similar CrB-type orthorhombic structures. In the structures of TbNiD 3.4 and DyNiD 3.4 , deuterium
摘要 本文报道了吸氢对金属间化合物 RNi (R = Gd, Tb, Dy, Sm) 和 R 6 M 1.67 Si 3 (R = Ce, Gd, Tb; M = Ni,合)。结果表明,三元氢化物GdNiH 3.2 、TbNiH 3.4 、DyNiH 3.4 和SmNiH 3.7 具有相似的CrB 型斜方晶结构。在TbNiD 3.4 和DyNiD 3.4 的结构中,氘原子占据四面体8f-间隙[R 3 Ni]、三角双锥4c-间隙[R 3 Ni 2 ]和八面体4b-间隙[R 4 Ni 2 ]。R 6 M 1.67 Si 3 的氢化物保留其母体化合物的六方结构。在Tb 6 Co 1.67 Si 3 D 11.2 和Ce 6 Ni 1.67 Si 3 D 12.3 结构中,氘原子占据四面体4f-间隙[R 3 M]和两种四面体间隙[R 3 Si]:12i 1 和2 .