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Neutron powder diffraction study on the structures of LaNi5−xAlxDy compounds

✍ Scribed by Honglin Du; Wenyong Zhang; Changsheng Wang; Jingzhi Han; Yingchang Yang; Bo Chen; Chaomei Xie; Kai Sun; Baisheng Zhang

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
82 KB
Volume
128
Category
Article
ISSN
0038-1098

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✦ Synopsis

The structures of LaNi 52x Al x D y (x ¼ 0:75; 0:25; y ¼ 1:01; 1.10, 1.91 and 3.1) were systematically investigated by neutron and X-ray diffraction. D atoms are found to enter the 6m site of the a-phase but not the reported 12n site, while the 6m and 12n sites of the b-phase. In the case of LaNi 4.75 Al 0.25 D y with lower Al content and symmetry, D atoms do not enter the a-phase but occupy the 4h site besides the 6m and 12n sites of the b-phase. The relationship between structures and properties is also discussed.

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