Change of α-Particle Stopping Power in Ni at the Curie Temperature

Bogdan Pawłowski and Marek Moneta Katedra Fizyki Ciała Stałego, Uniwersytet Łódzki Pomorska 149, 90-236 Łódź, Poland

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Received: March 3, 2003

Experiments showing that the ion--solid state interaction characteristics change at T C , the Curie temperature, were recapitulated. It was shown that the experimental results for the increase in the α-particles stopping power in Fe and Gd foils can be approximately described by the Bethe theory of stopping power with Stoner model for band ferromagnetism. The experimental result for increase in 5.486 MeV α-particles stopping power in 0.89 mg/cm 2 Ni foil after transition from ferro- to paramagnetic phase at T C was presented and it was shown to be in a good correlation with the previous data and with the theoretical evaluation.

DOI: 10.12693/APhysPolA.103.433 PACS numbers: 34.50.Bw, 61.85.+p