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AIP Advances  2011 

Structural and magnetic properties of bulk nanocrystalline Erbium metal

DOI: 10.1063/1.3580260

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Abstract:

Bulk nanocrystalline Erbium metals were prepared via Spark Plasma Sintering (SPS) and subsequent annealing process. The nanocrystalline Er metals have the same hexagonal close packed structure as that of coarse-grained sample. Decrease in grain size results in remarkable changes in the three magnetic ordering temperatures of the nanocrystalline Er metal. At 5 K, the magnetization drops by 10.9%, while the coercivity increases by 4 times for nanocrystalline Er compared with those of coarse-grained sample. These results indicate the remarkable influence of the nanostructure on the magnetism of Er due to finite size effect.

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