Abstract
Measurements of magnetization and lattice parameters were made on CeNi 5− x M x ( M = Fe or Mn) ternaries and their hydrides. Replacement of Ni by 10–35% Fe and 15% Mn in CeNi 5 expands the lattice and produces a significant change in magnetic properties. Magnetic ordering temperatures determined for the CeNi 5− x Fe x series range from 115 to 290 K. Absorbed hydrogen leads to a large increase in unit cell volume without a change in the crystal structure. Upon hydrogenation the ferromagnetism is suppressed in the Fe-substituted compounds whereas it is enhanced in Mn-substituted compounds. The magnetic characteristics of the CeNi 5− x Fe x system indicate that Fe induces a moment on the neighboring Ni atoms. These moments are dependent on iron content. The existence of Ni moments is indicative of strong coupling between the 3 d Fe atoms and the induced Ni moments.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
