Influence of electron concentration on the hydrogen absorption by RM<sub>5</sub> Haucke compounds
K A Gschneidner Jr; T Takeshita; Y Chung; O D McMasters; K A Gschneidner Jr; Dept. of Materials Sci. & Engng., Iowa State Univ., Ames, IA, USA; T Takeshita; Dept. of Materials Sci. & Engng., Iowa State Univ., Ames, IA, USA; Y Chung; Dept. of Materials Sci. & Engng., Iowa State Univ., Ames, IA, USA; O D McMasters; Dept. of Materials Sci. & Engng., Iowa State Univ., Ames, IA, USA
Журнал:
Journal of Physics F: Metal Physics
Дата:
1982-01-01
Аннотация:
Analysis of the electronic specific heat constant for some Y(Ni,Al)<sub>5</sub>, La(Ni,Al)<sub>5</sub>, La(Ni,Cu)<sub>5</sub> and Th(Ni,Al)<sub>5</sub> alloys suggests that the amount of hydrogen absorbed in excess of 3 H atoms per RM<sub>5</sub> formula unit (0.5 H atom per metal atom) by the RM<sub>5</sub> phases depends upon the number of unpaired 3d nickel electrons. The so-called 'aluminium anomaly' is also explained on the basis of these results.
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