Ferromagnetic Order in the Intermetallic Alloys laNi5-xMgx
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Keywords

hydrogen storage materials
chemical substitution
crystallographic and magnetic properties
X-ray diffraction

Abstract

The influences of the substitution of Ni with Mg on crystallographic and magnetic properties of the intermetallic alloys LaNi5-xMgx (x ? 0.4) were investigated. The X-ray diffraction patterns showed that all samples were of single phase, and the lattice parameters, a and c, decreased slightly upon chemical doping. LaNi5 is well known as an exchange-enhanced Pauli paramagnet. Interestingly, in LaNi5-xMgx, the ferromagnetic order existed even with a small amount of dopants; the Curie 
temperature reached the value of room temperature for x = 0.2, and enhanced with increasing x.

https://doi.org/10.29037/ajstd.49
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