Invariance of Curie temperature of iron for heating rates up to 10 000 Ks⁻¹

B. Hopstadius Department of Physics, University of Umeå, S-901 87, Umeå, Sweden

R. G. Ross Department of Physics, University of Umeå, S-901 87, Umeå, Sweden; School of Mathematics and Physics, University of East Anglia, Norwich NR4 7TJ, England

G. Bäckström Department of Physics, University of Umeå, S-901 87, Umeå, Sweden

Abstract

We have shown that the Curie temperature of Fe is unaffected by heating rates up to 10000 Ks⁻¹. This appears to be the first direct evidence, from measurement of bulk properties, that magnetization responds very rapidly to change of temperature through the ferromagnetic—paramagnetic phase transition.

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Invariance of Curie temperature of iron for heating rates up to 10 000 Ks⁻¹

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Invariance of Curie temperature of iron for heating rates up to 10 000 Ks⁻¹