�ber den Einflu� elektrolytisch abgeschiedenen Wasserstoffs auf die Magnetisierung von Nickel

45 Years of nickel hydride—History and perspectives

“…Such a behavior was found nearly simultaneously in Poland [33], East [34] and West Germany [35]. The straight line in Fig.…”

Magnetic study of the activation energy of the phase transition kinetics between nickel and nickel hydride

“…To produce the hydride phase of nickel electrolytically [I] temperatures arc required at which this "P-phase", which is characterized by an atomic number ratio H j s i between 0.7 and 1 and by a lattice expansion of fi", [ Z ] , is instable [3]. By a nuniber of different experiments a distinct decoiriposition of the hydride into nickel and gaseous hydrogen could be shown to occur already a t 0 "C [4].…”

“…The saturation magnetization, on the other hand, represents exclusively and completely the hydrogen-free regions or the a-phase. The extension of the non-magnetic region is proportional to the amount of interstitial hydrogen [3]. If more hydrogen is absorbed, for instance, the hydrogen-free domains decrease and the value of the sat nration magnetization M , drops accordingly.…”