Magnetic Property of Gadolinium Hydrides
Saturated magnetic moment and magnetic susceptibility of Gd hydrides were measured in the wide range of hydrogen content. In the composition range O≤H/Gd<1.8, the samples are ferromagnets with Curie temperature of about 291K and the magnetization decreases with increasing hydrogen content. In the range 1.8≤H/Gd≤2.3, the hydrides exhibit antiferromagnetic behavior and the Néel point increases with increasing hydrogen content. In the range H/Gd>2.3, another antiferromagnetic phase originating from GdH2.9 coexists. The change in magnetic ordering temperature can be qualitatively explained on the basis of anionic hydrogen model and RKKY interaction.
KeywordsMagnetic Susceptibility Curie Temperature Conduction Electron Hydrogen Content Antiferromagnetic Phase
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