On new rare-earth compounds LnRhAl

被引：21
作者：
Schwer, H
Hulliger, F
机构：
[1] Lab. fur Festkorperphysik ETH
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1997年 / 259卷 / 1-2期
关键词：
rare-earth rhodium aluminides; structure determination;
D O I：
10.1016/S0925-8388(97)00125-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Compounds of nominal composition LnRhAl with Ln=Pr, Nd, Gd, Ho and Tm were found to crystallize in the orthorhombic TiNiSi-type structure (ordered Co,Si type) whereas LaRhAl and CeRhAl were obtained in the orthorhombic Pd(Pd, Mn)Ge-type structure. The valence of Ce in CeRhAl is between three and four at room temperature. The atomic positions in CeRhAl were determined from single-crystal X-ray diffraction data, those of TmRhAl are the result of a Rietveld refinement of powder data. (C) 1997 Elsevier Science S.A.
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页码：249 / 253
页数：5
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