Abstract
It is thought that Pr ions make a large contribution to the magnetocrystalline anisotropy and magnetostriction of Pr-Fe intermetallic compounds. It was estimated that the magnetostriction of PrFe 2 is larger than that of TbFe 2 at 0 K. In this paper, polycrystalline PrFe 2 was prepared by a high-pressure synthesis method. Its structure, magnetic properties and thermal stability were investigated. For a multi-phase specimen, the magnetostriction constant, λ ‖−λ ⊥, is 1030 × 10 −6, comparable to that of Terfenol-D and might be larger if the single phase PrFe 2 could be obtained. The PrFe 2 compound becomes unstable and decomposes into Pr and Fe above 630 K, so it cannot be obtained by high temperature method under normal atmosphere.
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